-37.5% is the change from 200 to 125
Calculation steps:
[( 125 - 200 ) ÷ 200] x 100 = -37.5%
Formula
Percentage change = [(125 - 200) / 200] x 100
Subtract the new number by the original number
125 - 200 = -75
-75 ÷ 200 = -0.375
-0.375 x 100 = -37.5%