-21.45% is the change from 401 to 315
Calculation steps:
[( 315 - 401 ) ÷ 401] x 100 = -21.45%
Formula
Percentage change = [(315 - 401) / 401] x 100
Subtract the new number by the original number
315 - 401 = -86
-86 ÷ 401 = -0.2144638403990025
-0.2144638403990025 x 100 = -21.45%