-86.96% is the change from 920 to 120
Calculation steps:
[( 120 - 920 ) ÷ 920] x 100 = -86.96%
Formula
Percentage change = [(120 - 920) / 920] x 100
Subtract the new number by the original number
120 - 920 = -800
-800 ÷ 920 = -0.8695652173913043
-0.8695652173913043 x 100 = -86.96%