12.07% is the change from 820 to 919
Calculation steps:
[( 919 - 820 ) ÷ 820] x 100 = 12.07%
Formula
Percentage change = [(919 - 820) / 820] x 100
Subtract the new number by the original number
919 - 820 = 99
99 ÷ 820 = 0.12073170731707317
0.12073170731707317 x 100 = 12.07%