12.1% is the change from 818 to 917
Calculation steps:
[( 917 - 818 ) ÷ 818] x 100 = 12.1%
Formula
Percentage change = [(917 - 818) / 818] x 100
Subtract the new number by the original number
917 - 818 = 99
99 ÷ 818 = 0.12102689486552567
0.12102689486552567 x 100 = 12.1%