-68.75% is the change from 400 to 125
Calculation steps:
[( 125 - 400 ) ÷ 400] x 100 = -68.75%
Formula
Percentage change = [(125 - 400) / 400] x 100
Subtract the new number by the original number
125 - 400 = -275
-275 ÷ 400 = -0.6875
-0.6875 x 100 = -68.75%