11.83% is the change from 820 to 917
Calculation steps:
[( 917 - 820 ) ÷ 820] x 100 = 11.83%
Formula
Percentage change = [(917 - 820) / 820] x 100
Subtract the new number by the original number
917 - 820 = 97
97 ÷ 820 = 0.11829268292682926
0.11829268292682926 x 100 = 11.83%