12.3% is the change from 813 to 913
Calculation steps:
[( 913 - 813 ) ÷ 813] x 100 = 12.3%
Formula
Percentage change = [(913 - 813) / 813] x 100
Subtract the new number by the original number
913 - 813 = 100
100 ÷ 813 = 0.12300123001230012
0.12300123001230012 x 100 = 12.3%