13.48% is the change from 638 to 724
Calculation steps:
[( 724 - 638 ) ÷ 638] x 100 = 13.48%
Formula
Percentage change = [(724 - 638) / 638] x 100
Subtract the new number by the original number
724 - 638 = 86
86 ÷ 638 = 0.13479623824451412
0.13479623824451412 x 100 = 13.48%