-19.2% is the change from 401 to 324
Calculation steps:
[( 324 - 401 ) ÷ 401] x 100 = -19.2%
Formula
Percentage change = [(324 - 401) / 401] x 100
Subtract the new number by the original number
324 - 401 = -77
-77 ÷ 401 = -0.19201995012468828
-0.19201995012468828 x 100 = -19.2%