Thanks for dropping by the Community this afternoon. I'm happy to assist you. Unfortunately, QuickBooks doesn't have the ability to break down a Profit & Loss report by the bank account. The reason is because a profit and loss is driven by income and expense accounts, not by balance sheet accounts which a bank account falls under. I'm going to include a helpful article down below for you to check out that I think will help.
If you have any other questions, or need any further clarification, we're more than happy to help. Please, don't hesitate to respond down below. Thanks for your time and I hope you have a wonderful day.