-22.58% is the change from 155 to 120
Calculation steps:
[( 120 - 155 ) ÷ 155] x 100 = -22.58%
Formula
Percentage change = [(120 - 155) / 155] x 100
Subtract the new number by the original number
120 - 155 = -35
-35 ÷ 155 = -0.22580645161290322
-0.22580645161290322 x 100 = -22.58%