13.19% is the change from 637 to 721
Calculation steps:
[( 721 - 637 ) ÷ 637] x 100 = 13.19%
Formula
Percentage change = [(721 - 637) / 637] x 100
Subtract the new number by the original number
721 - 637 = 84
84 ÷ 637 = 0.13186813186813187
0.13186813186813187 x 100 = 13.19%