-40.83% is the change from 120 to 71
Calculation steps:
[( 71 - 120 ) ÷ 120] x 100 = -40.83%
Formula
Percentage change = [(71 - 120) / 120] x 100
Subtract the new number by the original number
71 - 120 = -49
-49 ÷ 120 = -0.4083333333333333
-0.4083333333333333 x 100 = -40.83%