-20.6% is the change from 534 to 424
Calculation steps:
[( 424 - 534 ) ÷ 534] x 100 = -20.6%
Formula
Percentage change = [(424 - 534) / 534] x 100
Subtract the new number by the original number
424 - 534 = -110
-110 ÷ 534 = -0.20599250936329588
-0.20599250936329588 x 100 = -20.6%