-19.45% is the change from 401 to 323
Calculation steps:
[( 323 - 401 ) ÷ 401] x 100 = -19.45%
Formula
Percentage change = [(323 - 401) / 401] x 100
Subtract the new number by the original number
323 - 401 = -78
-78 ÷ 401 = -0.19451371571072318
-0.19451371571072318 x 100 = -19.45%