-18.93% is the change from 523 to 424
Calculation steps:
[( 424 - 523 ) ÷ 523] x 100 = -18.93%
Formula
Percentage change = [(424 - 523) / 523] x 100
Subtract the new number by the original number
424 - 523 = -99
-99 ÷ 523 = -0.18929254302103252
-0.18929254302103252 x 100 = -18.93%