13.4% is the change from 724 to 821
Calculation steps:
[( 821 - 724 ) ÷ 724] x 100 = 13.4%
Formula
Percentage change = [(821 - 724) / 724] x 100
Subtract the new number by the original number
821 - 724 = 97
97 ÷ 724 = 0.13397790055248618
0.13397790055248618 x 100 = 13.4%