-18.86% is the change from 721 to 585
Calculation steps:
[( 585 - 721 ) ÷ 721] x 100 = -18.86%
Formula
Percentage change = [(585 - 721) / 721] x 100
Subtract the new number by the original number
585 - 721 = -136
-136 ÷ 721 = -0.18862690707350901
-0.18862690707350901 x 100 = -18.86%