-60% is the change from 125 to 50
Calculation steps:
[( 50 - 125 ) ÷ 125] x 100 = -60%
Formula
Percentage change = [(50 - 125) / 125] x 100
Subtract the new number by the original number
50 - 125 = -75
-75 ÷ 125 = -0.6
-0.6 x 100 = -60%
Example