-32% is the change from 125 to 85
Calculation steps:
[( 85 - 125 ) ÷ 125] x 100 = -32%
Formula
Percentage change = [(85 - 125) / 125] x 100
Subtract the new number by the original number
85 - 125 = -40
-40 ÷ 125 = -0.32
-0.32 x 100 = -32%
Example