12.13% is the change from 816 to 915
Calculation steps:
[( 915 - 816 ) ÷ 816] x 100 = 12.13%
Formula
Percentage change = [(915 - 816) / 816] x 100
Subtract the new number by the original number
915 - 816 = 99
99 ÷ 816 = 0.1213235294117647
0.1213235294117647 x 100 = 12.13%