-48.17% is the change from 818 to 424
Calculation steps:
[( 424 - 818 ) ÷ 818] x 100 = -48.17%
Formula
Percentage change = [(424 - 818) / 818] x 100
Subtract the new number by the original number
424 - 818 = -394
-394 ÷ 818 = -0.48166259168704156
-0.48166259168704156 x 100 = -48.17%