return BN for profit share calcultation

ts/sdk/src/accounts/vaultDepositorAccount.ts

@@ -39,15 +39,12 @@ export class VaultDepositorAccount extends VaultsProgramAccount<
 	}
 
 	/**
-	 * Calculates the proportion of a depositor's funds that will be paid as profit share fees.
+	 * Calculates the percentage of a depositor's funds that will be paid as profit share fees.
 	 *
 	 * @param vaultProfitShare Vault's profit share fee
 	 * @param depositorEquity Vault depositor's net deposit value
 	 */
-	calcProfitShareFeesProportion(
-		vaultProfitShare: BN,
-		depositorEquity: BN
-	): number {
+	calcProfitShareFeesProportion(vaultProfitShare: BN, depositorEquity: BN): BN {
 		const accountData = this.accountSubscriber.getAccountAndSlot().data;
 
 		const profit = depositorEquity
@@ -61,8 +58,9 @@ export class VaultDepositorAccount extends VaultsProgramAccount<
 		const profitShareAmount = profit
 			.mul(vaultProfitShare)
 			.div(PERCENTAGE_PRECISION);
-		const profitShareProportion =
-			profitShareAmount.toNumber() / depositorEquity.toNumber();
+		const profitShareProportion = profitShareAmount
+			.mul(PERCENTAGE_PRECISION)
+			.div(depositorEquity);
 
 		return profitShareProportion;
 	}