-32.27% is the change from 939 to 636
Calculation steps:
[( 636 - 939 ) ÷ 939] x 100 = -32.27%
Formula
Percentage change = [(636 - 939) / 939] x 100
Subtract the new number by the original number
636 - 939 = -303
-303 ÷ 939 = -0.3226837060702875
-0.3226837060702875 x 100 = -32.27%