Taking a Percentage of Each Paypal Subscription Fee?

Hello,

I am using S2Member on a platform I am developing to sell to businesses, who will then sell subscriptions to thheir own customers. The premise is I charge a set percentage of whatever monthly membership revenue they bring in as a fee for the platform. Is there a way to automate this process, or at least provide an easy to digest report for invoicing? Long term, I plan on marketing ths platform to many businesses, so to manually count each subscriber and calculate percentages each month will quickly become impractical. Thank you for your expertise.
-Brandon

You have a PM, please check.