-6.25% is the change from 400 to 375
Calculation steps:
[( 375 - 400 ) ÷ 400] x 100 = -6.25%
Formula
Percentage change = [(375 - 400) / 400] x 100
Subtract the new number by the original number
375 - 400 = -25
-25 ÷ 400 = -0.0625
-0.0625 x 100 = -6.25%