Quote Originally Posted by XLPadawan View Post
It took me a while, but I think I get it now. (Actual reps - Goal reps) x 0.025.

12 - 10 = 2 2 x 0.025 = 0.050 (or 5%) 60% + (5%) = 65%

8 - 10 = -2 -2 x 0.025 = -0.050 (-5%) 60% + (-5%) = 55%

Does it look like I'm on the right track?
Yes, that's exactly what I needed to accomplish.