-21.93% is the change from 424 to 331
Calculation steps:
[( 331 - 424 ) ÷ 424] x 100 = -21.93%
Formula
Percentage change = [(331 - 424) / 424] x 100
Subtract the new number by the original number
331 - 424 = -93
-93 ÷ 424 = -0.21933962264150944
-0.21933962264150944 x 100 = -21.93%