-32.7% is the change from 945 to 636
Calculation steps:
[( 636 - 945 ) ÷ 945] x 100 = -32.7%
Formula
Percentage change = [(636 - 945) / 945] x 100
Subtract the new number by the original number
636 - 945 = -309
-309 ÷ 945 = -0.326984126984127
-0.326984126984127 x 100 = -32.7%