877.78% is the change from 9 to 88
Calculation steps:
[( 88 - 9 ) ÷ 9] x 100 = 877.78%
Formula
Percentage change = [(88 - 9) / 9] x 100
Subtract the new number by the original number
88 - 9 = 79
79 ÷ 9 = 8.777777777777779
8.777777777777779 x 100 = 877.78%