Unfortunately, we cannot give you the exact formula.
The PayPro-score is designed to show affiliates how good a product is. That means in practice that it is not only important to have a lot of sales. But also the conditions for affiliates as favorable as possible.
In general you could say: the more affiliates sell your product, the higher your PayPro-score.
Any additional help needed?
Whenever you still have any difficulties or questions feel free to start a chat (right blue button) or contact us at firstname.lastname@example.org.