9.09% is the change from 880 to 960
Calculation steps:
[( 960 - 880 ) ÷ 880] x 100 = 9.09%
Formula
Percentage change = [(960 - 880) / 880] x 100
Subtract the new number by the original number
960 - 880 = 80
80 ÷ 880 = 0.09090909090909091
0.09090909090909091 x 100 = 9.09%