Does quikbooks percentage charge on ac to bank account?

Let me share some details about your concern, allen_w_beck. 

The amount or percentage depends on your bank. We can only record them in QuickBooks Online manually. Then, you can use Expense or Check to record bank charges. 

If you're referring to  Quickbooks payments, you can check out this article: What are the fees for QuickBooks Payments?

For additional reference, I've attached a link that you can use to learn how to track your cash flow in QuickBooks Online.

I'm always here to help if you need further assistance. Have a good one!