Conditional cashback based on cart total

Hello,
I searched for an answer for my question in this support forum but I didn’t find any.
I need different cashback percentage for different cart total amounts.
For example, if the amount is between 350 and 750 the cashback is 5%, if the total amount is from 750 to 1350 the cashback is 7%.
Is there a hook that I can change for when the cashback is calculated? If so, I think I can do what I need from there, but I can’t find the right hook or function.

Thanks in advance,
Ljupche Vasilev.