<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:7c032ae5-644a-4945-8a55-5d03f1d368ab,g:17b5af2a-b23c-4c95-8d0b-b4d33ac3b655-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://pwp.com/role/CondensedConsolidatedStatementsofFinancialConditionUnaudited" xlink:type="simple" xlink:href="pwp-20240630.xsd#CondensedConsolidatedStatementsofFinancialConditionUnaudited"/>
  <link:calculationLink xlink:role="http://pwp.com/role/CondensedConsolidatedStatementsofFinancialConditionUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_b7bfcd38-11b3-43da-8a68-e231f6a1f0b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:to="loc_us-gaap_CommonStockValue_b7bfcd38-11b3-43da-8a68-e231f6a1f0b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_162b4add-ad13-4fe3-9f4a-9fcc9c51f32e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_162b4add-ad13-4fe3-9f4a-9fcc9c51f32e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3fd0ba57-4e21-47a9-910a-34811faee4f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3fd0ba57-4e21-47a9-910a-34811faee4f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_9a3cbf32-424d-4eb8-9942-a9eed80f3b67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_9a3cbf32-424d-4eb8-9942-a9eed80f3b67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_0e88190f-ff05-4806-b569-630944c4b112" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:to="loc_us-gaap_TreasuryStockCommonValue_0e88190f-ff05-4806-b569-630944c4b112" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_97a395f1-695c-41dd-8cd0-db283a9ed2f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_fac90679-ddca-4794-8fef-70bfd418d20a" xlink:to="loc_us-gaap_PreferredStockValue_97a395f1-695c-41dd-8cd0-db283a9ed2f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_4325cb63-7483-4823-94bc-a69558cefec9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_4325cb63-7483-4823-94bc-a69558cefec9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_6f3d4541-7ade-4c7d-97bc-df276119faf0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermInvestments"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_ShortTermInvestments_6f3d4541-7ade-4c7d-97bc-df276119faf0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_700fd464-dff0-4c0f-87aa-4777afbbaa3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_700fd464-dff0-4c0f-87aa-4777afbbaa3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_260f1c33-850f-4e69-a66b-cef50a0a52ff" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_Goodwill_260f1c33-850f-4e69-a66b-cef50a0a52ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_5e8b5615-c2fa-4024-8b89-978567024c53" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_5e8b5615-c2fa-4024-8b89-978567024c53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_9589d9d2-d1d6-461a-97d7-40a46efaccad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_9589d9d2-d1d6-461a-97d7-40a46efaccad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_1c4987d7-29f9-4a0a-b4cf-11ee0fa558e0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_AccountsReceivableNet_1c4987d7-29f9-4a0a-b4cf-11ee0fa558e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_88a2670e-4960-4cda-b8e8-2644e6388014" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_88a2670e-4960-4cda-b8e8-2644e6388014" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_746baf90-f8e6-4a25-b4c9-b58be24777eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherReceivablesNetCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_746baf90-f8e6-4a25-b4c9-b58be24777eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_9ddb5366-982d-4833-ab75-e9ff823cb9dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCash"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_RestrictedCash_9ddb5366-982d-4833-ab75-e9ff823cb9dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_d8be8a03-2696-4cbb-b584-5496a10a2f74" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_fff6187b-92a6-4b25-b23f-bf720367f75f" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_d8be8a03-2696-4cbb-b584-5496a10a2f74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_17cab7b1-fb8f-4463-9c4f-34399d7f713d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_51968bd7-28df-4217-ad0c-322f388b06db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_17cab7b1-fb8f-4463-9c4f-34399d7f713d" xlink:to="loc_us-gaap_StockholdersEquity_51968bd7-28df-4217-ad0c-322f388b06db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_d09348e2-cd99-4d6e-927e-ed9b728911fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_17cab7b1-fb8f-4463-9c4f-34399d7f713d" xlink:to="loc_us-gaap_MinorityInterest_d09348e2-cd99-4d6e-927e-ed9b728911fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_1637a6da-9ae2-4a6f-ab70-fe687edda979" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_96577eff-8fd7-4d58-b0e8-df25539451c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_1637a6da-9ae2-4a6f-ab70-fe687edda979" xlink:to="loc_us-gaap_OperatingLeaseLiability_96577eff-8fd7-4d58-b0e8-df25539451c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_9111867f-0c82-4729-be9b-1f1c3997c348" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_1637a6da-9ae2-4a6f-ab70-fe687edda979" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_9111867f-0c82-4729-be9b-1f1c3997c348" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_9a115f1e-4429-4051-9ae9-44cf65d9de3f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_1637a6da-9ae2-4a6f-ab70-fe687edda979" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_9a115f1e-4429-4051-9ae9-44cf65d9de3f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_8ffe6495-b1a7-4f42-b8ee-3158dcf1d6eb" xlink:href="pwp-20240630.xsd#pwp_AmountDuePursuantToTaxReceivableAgreement"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_1637a6da-9ae2-4a6f-ab70-fe687edda979" xlink:to="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_8ffe6495-b1a7-4f42-b8ee-3158dcf1d6eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_785ae786-4094-4bdb-85a7-e8ee30be89ce" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_a21c9580-837d-44f2-b12a-458d4a596f85" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_785ae786-4094-4bdb-85a7-e8ee30be89ce" xlink:to="loc_us-gaap_CommitmentsAndContingencies_a21c9580-837d-44f2-b12a-458d4a596f85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_5d12cee6-f454-4fb3-9c5a-d1014041ac84" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_785ae786-4094-4bdb-85a7-e8ee30be89ce" xlink:to="loc_us-gaap_Liabilities_5d12cee6-f454-4fb3-9c5a-d1014041ac84" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_b6ca0281-83dd-410e-9e2e-e7042656219d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_785ae786-4094-4bdb-85a7-e8ee30be89ce" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_b6ca0281-83dd-410e-9e2e-e7042656219d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_7b4c0032-e27e-42d1-82e6-9afc2fc48bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_785ae786-4094-4bdb-85a7-e8ee30be89ce" xlink:to="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_7b4c0032-e27e-42d1-82e6-9afc2fc48bb0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/CondensedConsolidatedStatementsofOperationsUnaudited" xlink:type="simple" xlink:href="pwp-20240630.xsd#CondensedConsolidatedStatementsofOperationsUnaudited"/>
  <link:calculationLink xlink:role="http://pwp.com/role/CondensedConsolidatedStatementsofOperationsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_cef05e76-dfd1-4f86-bb2b-202b1772c401" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_0e065118-e58c-40b8-b05e-e5704687e9da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_cef05e76-dfd1-4f86-bb2b-202b1772c401" xlink:to="loc_us-gaap_OperatingIncomeLoss_0e065118-e58c-40b8-b05e-e5704687e9da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_69be0eeb-0d2c-40ca-b336-5e9549f21617" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_cef05e76-dfd1-4f86-bb2b-202b1772c401" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_69be0eeb-0d2c-40ca-b336-5e9549f21617" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_de4eb14b-1016-468a-8108-b15c8b7c4c59" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_218034f2-b639-4b3e-acee-4d2445d7846d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_de4eb14b-1016-468a-8108-b15c8b7c4c59" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_218034f2-b639-4b3e-acee-4d2445d7846d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_cf47844c-9967-4002-b8a7-2ba83db9b90c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_de4eb14b-1016-468a-8108-b15c8b7c4c59" xlink:to="loc_us-gaap_OperatingExpenses_cf47844c-9967-4002-b8a7-2ba83db9b90c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_96151a42-d08b-4e5a-b410-426e0d93d266" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_CompensationExpenseExcludingEquityBasedCompensation_c94331b9-0cb6-46ae-9a7e-069d70f637e9" xlink:href="pwp-20240630.xsd#pwp_CompensationExpenseExcludingEquityBasedCompensation"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LaborAndRelatedExpense_96151a42-d08b-4e5a-b410-426e0d93d266" xlink:to="loc_pwp_CompensationExpenseExcludingEquityBasedCompensation_c94331b9-0cb6-46ae-9a7e-069d70f637e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_499013aa-ea89-4f90-b1b7-bb8b4b281529" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LaborAndRelatedExpense_96151a42-d08b-4e5a-b410-426e0d93d266" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_499013aa-ea89-4f90-b1b7-bb8b4b281529" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_9b1dcfb1-1014-46bb-af91-a0f0654629c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_92000a49-ad54-4b14-a02e-6e35c4ff2040" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_9b1dcfb1-1014-46bb-af91-a0f0654629c7" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_92000a49-ad54-4b14-a02e-6e35c4ff2040" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_9e008d9c-a3c9-4b9c-ad56-52d746a1f5dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_9b1dcfb1-1014-46bb-af91-a0f0654629c7" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_9e008d9c-a3c9-4b9c-ad56-52d746a1f5dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_e664d684-f4f7-409a-bb6f-7427f60cb2ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_b1372e64-d8b6-475f-b63d-02d439c0b359" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_e664d684-f4f7-409a-bb6f-7427f60cb2ad" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_b1372e64-d8b6-475f-b63d-02d439c0b359" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_e3984613-e33a-431d-a094-4d769f70381e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_LaborAndRelatedExpense_e3984613-e33a-431d-a094-4d769f70381e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalFees_e27afdcb-3863-4c02-9c3b-aef1598917ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfessionalFees"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_ProfessionalFees_e27afdcb-3863-4c02-9c3b-aef1598917ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommunicationsAndInformationTechnology_6ffbe1ce-2916-49ac-b399-822c41e62486" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommunicationsAndInformationTechnology"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_CommunicationsAndInformationTechnology_6ffbe1ce-2916-49ac-b399-822c41e62486" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OccupancyNet_a15f7d34-485a-4328-a735-31bdd74a79da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OccupancyNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_OccupancyNet_a15f7d34-485a-4328-a735-31bdd74a79da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TravelAndEntertainmentExpense_d46a7bc2-8f6a-4afc-a542-6f7ea5548346" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TravelAndEntertainmentExpense"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_TravelAndEntertainmentExpense_d46a7bc2-8f6a-4afc-a542-6f7ea5548346" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_1bcab22e-4610-42cb-b8a6-1a827e11821b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_1bcab22e-4610-42cb-b8a6-1a827e11821b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_e905a323-fd94-4906-9708-745636ce9a97" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_04e73ea9-19a8-4535-83e1-ee96161803c1" xlink:to="loc_us-gaap_DepreciationAndAmortization_e905a323-fd94-4906-9708-745636ce9a97" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_08661752-ac16-440c-be9f-f5672d889d92" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_d47299be-11f4-4b35-86f1-29a4662b60d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_08661752-ac16-440c-be9f-f5672d889d92" xlink:to="loc_us-gaap_ProfitLoss_d47299be-11f4-4b35-86f1-29a4662b60d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_5eb93123-541b-49aa-af85-47866ac68cdd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_08661752-ac16-440c-be9f-f5672d889d92" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_5eb93123-541b-49aa-af85-47866ac68cdd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeLossUnaudited" xlink:type="simple" xlink:href="pwp-20240630.xsd#CondensedConsolidatedStatementsofComprehensiveIncomeLossUnaudited"/>
  <link:calculationLink xlink:role="http://pwp.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeLossUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_9cf4f488-b2a9-4fd3-abb2-c643cda19078" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3944d77f-8fd4-4de2-9e8f-db706c7f0c2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_9cf4f488-b2a9-4fd3-abb2-c643cda19078" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3944d77f-8fd4-4de2-9e8f-db706c7f0c2f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_64044a7a-ae6d-4f11-abd1-f9be66515a6c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_9cf4f488-b2a9-4fd3-abb2-c643cda19078" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_64044a7a-ae6d-4f11-abd1-f9be66515a6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_94401bcc-efa8-4e02-b8b4-afab6bcee29f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_51a844d2-7210-4d8c-b4cd-d77a87ab9760" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_94401bcc-efa8-4e02-b8b4-afab6bcee29f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_51a844d2-7210-4d8c-b4cd-d77a87ab9760" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_772b95af-6991-482e-b693-273a048ac6b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_94401bcc-efa8-4e02-b8b4-afab6bcee29f" xlink:to="loc_us-gaap_ProfitLoss_772b95af-6991-482e-b693-273a048ac6b3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="simple" xlink:href="pwp-20240630.xsd#CondensedConsolidatedStatementsofCashFlowsUnaudited"/>
  <link:calculationLink xlink:role="http://pwp.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_0adcc343-55ae-404a-846b-303914c71018" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_0adcc343-55ae-404a-846b-303914c71018" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_PaymentsPursuantToTaxReceivableAgreement_cabc0aa1-c45b-4cfb-b5d1-4a940dc8499a" xlink:href="pwp-20240630.xsd#pwp_PaymentsPursuantToTaxReceivableAgreement"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_pwp_PaymentsPursuantToTaxReceivableAgreement_cabc0aa1-c45b-4cfb-b5d1-4a940dc8499a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_PaymentForTheExchangeOfPartnershipUnits_22a03c9f-996b-4bbe-81ac-cb3ff4e181f5" xlink:href="pwp-20240630.xsd#pwp_PaymentForTheExchangeOfPartnershipUnits"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_pwp_PaymentForTheExchangeOfPartnershipUnits_22a03c9f-996b-4bbe-81ac-cb3ff4e181f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfEquity_2ca6282c-f224-4c54-b37b-d3d99c63ef01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForRepurchaseOfEquity"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfEquity_2ca6282c-f224-4c54-b37b-d3d99c63ef01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfCapitalDistribution_353cf4d0-a52f-427c-a8c7-6e457a281d2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfCapitalDistribution"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_us-gaap_PaymentsOfCapitalDistribution_353cf4d0-a52f-427c-a8c7-6e457a281d2b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_e7bb4083-e211-4d1e-8f75-3e5114417b58" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_e7bb4083-e211-4d1e-8f75-3e5114417b58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_6942cd24-2082-419a-b4ec-3ccbf3baa168" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_6942cd24-2082-419a-b4ec-3ccbf3baa168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_df6025dd-3a00-4fdf-b69c-832a9a9bb2fe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8ed2fe9e-1fdc-4964-b05f-e7701da3c39e" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_df6025dd-3a00-4fdf-b69c-832a9a9bb2fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a1890445-86e4-45a6-9641-4a51babbf66b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireMarketableSecurities_b90b7496-05c7-41d6-9a30-beb5cdbe1b0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireMarketableSecurities"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a1890445-86e4-45a6-9641-4a51babbf66b" xlink:to="loc_us-gaap_PaymentsToAcquireMarketableSecurities_b90b7496-05c7-41d6-9a30-beb5cdbe1b0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ae1b6a96-bc34-4d6a-8e0b-dd97505be023" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a1890445-86e4-45a6-9641-4a51babbf66b" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_ae1b6a96-bc34-4d6a-8e0b-dd97505be023" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_bf7ae59a-6209-4a08-969e-63db1bba054d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a1890445-86e4-45a6-9641-4a51babbf66b" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_bf7ae59a-6209-4a08-969e-63db1bba054d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_36ff8442-7919-490a-83b4-6256ebe0ae71" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a1890445-86e4-45a6-9641-4a51babbf66b" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_36ff8442-7919-490a-83b4-6256ebe0ae71" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_05597a8b-adee-434f-be1c-a4a86ded63d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7cd7ab5b-9c6f-404a-9ff1-3a2e364afad4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_05597a8b-adee-434f-be1c-a4a86ded63d5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7cd7ab5b-9c6f-404a-9ff1-3a2e364afad4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0954741f-efda-4808-a052-d365fafc71e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_05597a8b-adee-434f-be1c-a4a86ded63d5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0954741f-efda-4808-a052-d365fafc71e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5e58b1f1-4b2e-48ea-a033-1ede132fa580" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_05597a8b-adee-434f-be1c-a4a86ded63d5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5e58b1f1-4b2e-48ea-a033-1ede132fa580" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_bb0f0e91-f168-416f-8d9a-4299e9c4d66a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_05597a8b-adee-434f-be1c-a4a86ded63d5" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_bb0f0e91-f168-416f-8d9a-4299e9c4d66a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_079fc81f-4bd4-4a6d-87a7-f30dc477417a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_ProfitLoss_079fc81f-4bd4-4a6d-87a7-f30dc477417a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_5cd21713-35d6-4a2a-8fbe-8dc6cd984e56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_ShareBasedCompensation_5cd21713-35d6-4a2a-8fbe-8dc6cd984e56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_c2ebd365-bdc8-4e42-8f1f-024c6296297b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_DepreciationAndAmortization_c2ebd365-bdc8-4e42-8f1f-024c6296297b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_61455cd3-b223-4aa4-96d9-1e79df78d549" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_61455cd3-b223-4aa4-96d9-1e79df78d549" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_932d5130-8a9f-41f9-bfca-42047b7220e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_932d5130-8a9f-41f9-bfca-42047b7220e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_047caed8-b420-44b0-9d0b-a06f237ab1f4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_047caed8-b420-44b0-9d0b-a06f237ab1f4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent_b464fa91-402a-40c1-8889-4966fdb4fe91" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent_b464fa91-402a-40c1-8889-4966fdb4fe91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_c41d2573-c47c-4cd9-8c90-19d2afb5fcb4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_c41d2573-c47c-4cd9-8c90-19d2afb5fcb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_c4b56f6b-1203-4455-8fc3-47ea1c2fc204" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_c4b56f6b-1203-4455-8fc3-47ea1c2fc204" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_7c63b41b-f64d-4aa5-a75b-3c43a547614c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_7c63b41b-f64d-4aa5-a75b-3c43a547614c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_749f4000-9b8a-480c-b811-d0131716507d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_749f4000-9b8a-480c-b811-d0131716507d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_a07fc262-e3d1-4d27-adca-11602cb5e6ab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_a07fc262-e3d1-4d27-adca-11602cb5e6ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_e35997ee-4fc1-4afb-91ed-05402d75dced" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_e35997ee-4fc1-4afb-91ed-05402d75dced" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_6510d773-39a4-4720-be78-b15d626d9b41" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_28850c95-f2d3-407d-87be-62e1ed56acec" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_6510d773-39a4-4720-be78-b15d626d9b41" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/LeasesSummaryofOperatingLeasesDetails" xlink:type="simple" xlink:href="pwp-20240630.xsd#LeasesSummaryofOperatingLeasesDetails"/>
  <link:calculationLink xlink:role="http://pwp.com/role/LeasesSummaryofOperatingLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_2fd954f7-004a-4b01-ad4b-20de1c4230c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_4f062c04-669b-450b-85c4-aee588f2843f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_2fd954f7-004a-4b01-ad4b-20de1c4230c6" xlink:to="loc_us-gaap_OperatingLeaseCost_4f062c04-669b-450b-85c4-aee588f2843f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_0df7a15d-bbd6-4d78-b624-37e547fb5c85" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_2fd954f7-004a-4b01-ad4b-20de1c4230c6" xlink:to="loc_us-gaap_VariableLeaseCost_0df7a15d-bbd6-4d78-b624-37e547fb5c85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_8b850a8b-7ba8-40b3-b470-f3fa38c94457" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubleaseIncome"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_2fd954f7-004a-4b01-ad4b-20de1c4230c6" xlink:to="loc_us-gaap_SubleaseIncome_8b850a8b-7ba8-40b3-b470-f3fa38c94457" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/LeasesScheduleofOperatingLeaseMaturitiesDetails" xlink:type="simple" xlink:href="pwp-20240630.xsd#LeasesScheduleofOperatingLeaseMaturitiesDetails"/>
  <link:calculationLink xlink:role="http://pwp.com/role/LeasesScheduleofOperatingLeaseMaturitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_7d50b9ec-a0f6-473d-b6d1-a2aeb555522a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_7d50b9ec-a0f6-473d-b6d1-a2aeb555522a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_ad2062d0-81b1-423a-a80e-487824cb104f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_ad2062d0-81b1-423a-a80e-487824cb104f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_a20c8762-3e74-404d-a5e5-96704b527be1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_a20c8762-3e74-404d-a5e5-96704b527be1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_0c482946-5333-48fd-a031-ff9bb28338c8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_0c482946-5333-48fd-a031-ff9bb28338c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_187659c7-b6cb-4f88-b740-2aba085e3105" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_187659c7-b6cb-4f88-b740-2aba085e3105" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_00a46e1a-7139-4b5c-acdc-1ec22c403020" xlink:href="pwp-20240630.xsd#pwp_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_dd780bb4-f32a-4859-a3c9-ceea71f863a4" xlink:to="loc_pwp_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_00a46e1a-7139-4b5c-acdc-1ec22c403020" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/LeasesScheduleofOperatingLeaseMaturitiesDetails_1" xlink:type="simple" xlink:href="pwp-20240630.xsd#LeasesScheduleofOperatingLeaseMaturitiesDetails_1"/>
  <link:calculationLink xlink:role="http://pwp.com/role/LeasesScheduleofOperatingLeaseMaturitiesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_0bc3698b-fddd-4a5c-a0e7-5b390f0d1319" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_da821dd6-6fe7-4201-8f95-ab2fcb6c0e64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_0bc3698b-fddd-4a5c-a0e7-5b390f0d1319" xlink:to="loc_us-gaap_OperatingLeaseLiability_da821dd6-6fe7-4201-8f95-ab2fcb6c0e64" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_e6c7b29f-93f1-49b9-a1ee-9e5e3d12657e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_0bc3698b-fddd-4a5c-a0e7-5b390f0d1319" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_e6c7b29f-93f1-49b9-a1ee-9e5e3d12657e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/IntangibleAssetsSummaryofComponentsofGrossandNetIntangibleAssetDetails" xlink:type="simple" xlink:href="pwp-20240630.xsd#IntangibleAssetsSummaryofComponentsofGrossandNetIntangibleAssetDetails"/>
  <link:calculationLink xlink:role="http://pwp.com/role/IntangibleAssetsSummaryofComponentsofGrossandNetIntangibleAssetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c34a5d8e-4513-41ae-bed8-55f0660207d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_64ea1dbf-ac10-4558-8211-2bf191194e63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c34a5d8e-4513-41ae-bed8-55f0660207d7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_64ea1dbf-ac10-4558-8211-2bf191194e63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_94a72d1a-1554-4d6b-b49b-96a443332c74" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c34a5d8e-4513-41ae-bed8-55f0660207d7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_94a72d1a-1554-4d6b-b49b-96a443332c74" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/FixedAssetsSummaryofFixedAssetsDetails" xlink:type="simple" xlink:href="pwp-20240630.xsd#FixedAssetsSummaryofFixedAssetsDetails"/>
  <link:calculationLink xlink:role="http://pwp.com/role/FixedAssetsSummaryofFixedAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_668229c6-0c3a-4775-817f-190baabd4431" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_6ed97006-1784-4413-b27f-af70d63a8e92" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_668229c6-0c3a-4775-817f-190baabd4431" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_6ed97006-1784-4413-b27f-af70d63a8e92" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_9a491fbc-6a32-42ea-94c6-d99ef483612d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_668229c6-0c3a-4775-817f-190baabd4431" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_9a491fbc-6a32-42ea-94c6-d99ef483612d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/NetIncomeLossPerShareAttributabletoClassACommonShareholdersScheduleofComputationofBasicandDilutedNetIncomeLossPerShareAttributabletoClassACommonShareholdersDetails" xlink:type="simple" xlink:href="pwp-20240630.xsd#NetIncomeLossPerShareAttributabletoClassACommonShareholdersScheduleofComputationofBasicandDilutedNetIncomeLossPerShareAttributabletoClassACommonShareholdersDetails"/>
  <link:calculationLink xlink:role="http://pwp.com/role/NetIncomeLossPerShareAttributabletoClassACommonShareholdersScheduleofComputationofBasicandDilutedNetIncomeLossPerShareAttributabletoClassACommonShareholdersDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_25cc72c0-2206-4e38-b43d-b497211302c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_IncrementalCommonSharesAttributableToExchangeOfOtherUnits_3e3373ce-e286-4539-95c6-aa77f2a88caf" xlink:href="pwp-20240630.xsd#pwp_IncrementalCommonSharesAttributableToExchangeOfOtherUnits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_25cc72c0-2206-4e38-b43d-b497211302c6" xlink:to="loc_pwp_IncrementalCommonSharesAttributableToExchangeOfOtherUnits_3e3373ce-e286-4539-95c6-aa77f2a88caf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_c2e9ea4e-044c-4e65-9089-cb51e3866d6e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_25cc72c0-2206-4e38-b43d-b497211302c6" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_c2e9ea4e-044c-4e65-9089-cb51e3866d6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_68191919-4f9a-4127-b0e9-68a268e8dad7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOtherUnits_bb14962d-402e-44ca-b53a-d3065dbced1d" xlink:href="pwp-20240630.xsd#pwp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOtherUnits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_68191919-4f9a-4127-b0e9-68a268e8dad7" xlink:to="loc_pwp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOtherUnits_bb14962d-402e-44ca-b53a-d3065dbced1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_210b7820-88a2-47d1-b239-df36a41c4ef3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_68191919-4f9a-4127-b0e9-68a268e8dad7" xlink:to="loc_us-gaap_NetIncomeLoss_210b7820-88a2-47d1-b239-df36a41c4ef3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://pwp.com/role/RelatedPartyTransactionsScheduleofEstimatedPaymentsUnderTaxReceivableAgreementDetails" xlink:type="simple" xlink:href="pwp-20240630.xsd#RelatedPartyTransactionsScheduleofEstimatedPaymentsUnderTaxReceivableAgreementDetails"/>
  <link:calculationLink xlink:role="http://pwp.com/role/RelatedPartyTransactionsScheduleofEstimatedPaymentsUnderTaxReceivableAgreementDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:href="pwp-20240630.xsd#pwp_AmountDuePursuantToTaxReceivableAgreement"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementRemainderOfFiscalYear_c23f6cf1-dce7-4206-af88-23f8ee913a37" xlink:href="pwp-20240630.xsd#pwp_EstimatedPaymentsUnderTaxReceivableAgreementRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:to="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementRemainderOfFiscalYear_c23f6cf1-dce7-4206-af88-23f8ee913a37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearOne_9acb7858-0938-454f-97ec-d88d5e135684" xlink:href="pwp-20240630.xsd#pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearOne"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:to="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearOne_9acb7858-0938-454f-97ec-d88d5e135684" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearTwo_360fce91-6438-40a2-b809-ecc8774ea18d" xlink:href="pwp-20240630.xsd#pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:to="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearTwo_360fce91-6438-40a2-b809-ecc8774ea18d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearThree_1ea8fa02-427b-4334-84d0-312741dac6f8" xlink:href="pwp-20240630.xsd#pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:to="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearThree_1ea8fa02-427b-4334-84d0-312741dac6f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearFour_ee399564-9357-47ff-94b1-50e0872af6f1" xlink:href="pwp-20240630.xsd#pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:to="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearFour_ee399564-9357-47ff-94b1-50e0872af6f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementAfterYearFour_47e2fa31-2be0-4dac-8227-4ca42bb9638c" xlink:href="pwp-20240630.xsd#pwp_EstimatedPaymentsUnderTaxReceivableAgreementAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pwp_AmountDuePursuantToTaxReceivableAgreement_fd75d8f2-d626-4f71-b537-6fa41f13f40d" xlink:to="loc_pwp_EstimatedPaymentsUnderTaxReceivableAgreementAfterYearFour_47e2fa31-2be0-4dac-8227-4ca42bb9638c" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
