-1.25% is the change from 400 to 395
Calculation steps:
[( 395 - 400 ) ÷ 400] x 100 = -1.25%
Formula
Percentage change = [(395 - 400) / 400] x 100
Subtract the new number by the original number
395 - 400 = -5
-5 ÷ 400 = -0.0125
-0.0125 x 100 = -1.25%