-31.21% is the change from 721 to 496
Calculation steps:
[( 496 - 721 ) ÷ 721] x 100 = -31.21%
Formula
Percentage change = [(496 - 721) / 721] x 100
Subtract the new number by the original number
496 - 721 = -225
-225 ÷ 721 = -0.3120665742024965
-0.3120665742024965 x 100 = -31.21%