809.09% is the change from 11 to 100
Calculation steps:
[( 100 - 11 ) ÷ 11] x 100 = 809.09%
Formula
Percentage change = [(100 - 11) / 11] x 100
Subtract the new number by the original number
100 - 11 = 89
89 ÷ 11 = 8.090909090909092
8.090909090909092 x 100 = 809.09%