-86.81% is the change from 910 to 120
Calculation steps:
[( 120 - 910 ) ÷ 910] x 100 = -86.81%
Formula
Percentage change = [(120 - 910) / 910] x 100
Subtract the new number by the original number
120 - 910 = -790
-790 ÷ 910 = -0.8681318681318682
-0.8681318681318682 x 100 = -86.81%