-23.58% is the change from 424 to 324
Calculation steps:
[( 324 - 424 ) ÷ 424] x 100 = -23.58%
Formula
Percentage change = [(324 - 424) / 424] x 100
Subtract the new number by the original number
324 - 424 = -100
-100 ÷ 424 = -0.2358490566037736
-0.2358490566037736 x 100 = -23.58%