8900% is the change from 11 to 990
Calculation steps:
[( 990 - 11 ) ÷ 11] x 100 = 8900%
Formula
Percentage change = [(990 - 11) / 11] x 100
Subtract the new number by the original number
990 - 11 = 979
979 ÷ 11 = 89
89 x 100 = 8900%
Example