12.55% is the change from 813 to 915
Calculation steps:
[( 915 - 813 ) ÷ 813] x 100 = 12.55%
Formula
Percentage change = [(915 - 813) / 813] x 100
Subtract the new number by the original number
915 - 813 = 102
102 ÷ 813 = 0.12546125461254612
0.12546125461254612 x 100 = 12.55%