122.22% is the change from 99 to 220
Calculation steps:
[( 220 - 99 ) ÷ 99] x 100 = 122.22%
Formula
Percentage change = [(220 - 99) / 99] x 100
Subtract the new number by the original number
220 - 99 = 121
121 ÷ 99 = 1.2222222222222223
1.2222222222222223 x 100 = 122.22%