13.1% is the change from 809 to 915
Calculation steps:
[( 915 - 809 ) ÷ 809] x 100 = 13.1%
Formula
Percentage change = [(915 - 809) / 809] x 100
Subtract the new number by the original number
915 - 809 = 106
106 ÷ 809 = 0.13102595797280595
0.13102595797280595 x 100 = 13.1%