-23.86% is the change from 721 to 549
Calculation steps:
[( 549 - 721 ) ÷ 721] x 100 = -23.86%
Formula
Percentage change = [(549 - 721) / 721] x 100
Subtract the new number by the original number
549 - 721 = -172
-172 ÷ 721 = -0.23855755894590847
-0.23855755894590847 x 100 = -23.86%