788.89% is the change from 99 to 880
Calculation steps:
[( 880 - 99 ) ÷ 99] x 100 = 788.89%
Formula
Percentage change = [(880 - 99) / 99] x 100
Subtract the new number by the original number
880 - 99 = 781
781 ÷ 99 = 7.888888888888889
7.888888888888889 x 100 = 788.89%