-28.16% is the change from 721 to 518
Calculation steps:
[( 518 - 721 ) ÷ 721] x 100 = -28.16%
Formula
Percentage change = [(518 - 721) / 721] x 100
Subtract the new number by the original number
518 - 721 = -203
-203 ÷ 721 = -0.2815533980582524
-0.2815533980582524 x 100 = -28.16%