-29.17% is the change from 120 to 85
Calculation steps:
[( 85 - 120 ) ÷ 120] x 100 = -29.17%
Formula
Percentage change = [(85 - 120) / 120] x 100
Subtract the new number by the original number
85 - 120 = -35
-35 ÷ 120 = -0.2916666666666667
-0.2916666666666667 x 100 = -29.17%