-31.41% is the change from 920 to 631
Calculation steps:
[( 631 - 920 ) ÷ 920] x 100 = -31.41%
Formula
Percentage change = [(631 - 920) / 920] x 100
Subtract the new number by the original number
631 - 920 = -289
-289 ÷ 920 = -0.3141304347826087
-0.3141304347826087 x 100 = -31.41%