-28.04% is the change from 724 to 521
Calculation steps:
[( 521 - 724 ) ÷ 724] x 100 = -28.04%
Formula
Percentage change = [(521 - 724) / 724] x 100
Subtract the new number by the original number
521 - 724 = -203
-203 ÷ 724 = -0.2803867403314917
-0.2803867403314917 x 100 = -28.04%