44.2% is the change from 500 to 721
Calculation steps:
[( 721 - 500 ) ÷ 500] x 100 = 44.2%
Formula
Percentage change = [(721 - 500) / 500] x 100
Subtract the new number by the original number
721 - 500 = 221
221 ÷ 500 = 0.442
0.442 x 100 = 44.2%
Example