9.9% is the change from 808 to 888
Calculation steps:
[( 888 - 808 ) ÷ 808] x 100 = 9.9%
Formula
Percentage change = [(888 - 808) / 808] x 100
Subtract the new number by the original number
888 - 808 = 80
80 ÷ 808 = 0.09900990099009901
0.09900990099009901 x 100 = 9.9%