-32.88% is the change from 952 to 639
Calculation steps:
[( 639 - 952 ) ÷ 952] x 100 = -32.88%
Formula
Percentage change = [(639 - 952) / 952] x 100
Subtract the new number by the original number
639 - 952 = -313
-313 ÷ 952 = -0.328781512605042
-0.328781512605042 x 100 = -32.88%