-0.55% is the change from 725 to 721
Calculation steps:
[( 721 - 725 ) ÷ 725] x 100 = -0.55%
Formula
Percentage change = [(721 - 725) / 725] x 100
Subtract the new number by the original number
721 - 725 = -4
-4 ÷ 725 = -0.005517241379310344
-0.005517241379310344 x 100 = -0.55%