-96.63% is the change from 920 to 31
Calculation steps:
[( 31 - 920 ) ÷ 920] x 100 = -96.63%
Formula
Percentage change = [(31 - 920) / 920] x 100
Subtract the new number by the original number
31 - 920 = -889
-889 ÷ 920 = -0.966304347826087
-0.966304347826087 x 100 = -96.63%