-0.83% is the change from 727 to 721
Calculation steps:
[( 721 - 727 ) ÷ 727] x 100 = -0.83%
Formula
Percentage change = [(721 - 727) / 727] x 100
Subtract the new number by the original number
721 - 727 = -6
-6 ÷ 727 = -0.008253094910591471
-0.008253094910591471 x 100 = -0.83%