-30.17% is the change from 401 to 280
Calculation steps:
[( 280 - 401 ) ÷ 401] x 100 = -30.17%
Formula
Percentage change = [(280 - 401) / 401] x 100
Subtract the new number by the original number
280 - 401 = -121
-121 ÷ 401 = -0.30174563591022446
-0.30174563591022446 x 100 = -30.17%