-25.81% is the change from 155 to 115
Calculation steps:
[( 115 - 155 ) ÷ 155] x 100 = -25.81%
Formula
Percentage change = [(115 - 155) / 155] x 100
Subtract the new number by the original number
115 - 155 = -40
-40 ÷ 155 = -0.25806451612903225
-0.25806451612903225 x 100 = -25.81%