-20.99% is the change from 424 to 335
Calculation steps:
[( 335 - 424 ) ÷ 424] x 100 = -20.99%
Formula
Percentage change = [(335 - 424) / 424] x 100
Subtract the new number by the original number
335 - 424 = -89
-89 ÷ 424 = -0.2099056603773585
-0.2099056603773585 x 100 = -20.99%