-50.4% is the change from 125 to 62
Calculation steps:
[( 62 - 125 ) ÷ 125] x 100 = -50.4%
Formula
Percentage change = [(62 - 125) / 125] x 100
Subtract the new number by the original number
62 - 125 = -63
-63 ÷ 125 = -0.504
-0.504 x 100 = -50.4%
Example