8.78% is the change from 809 to 880
Calculation steps:
[( 880 - 809 ) ÷ 809] x 100 = 8.78%
Formula
Percentage change = [(880 - 809) / 809] x 100
Subtract the new number by the original number
880 - 809 = 71
71 ÷ 809 = 0.08776266996291718
0.08776266996291718 x 100 = 8.78%