12.5% is the change from 728 to 819
Calculation steps:
[( 819 - 728 ) ÷ 728] x 100 = 12.5%
Formula
Percentage change = [(819 - 728) / 728] x 100
Subtract the new number by the original number
819 - 728 = 91
91 ÷ 728 = 0.125
0.125 x 100 = 12.5%
Example