22.22% is the change from 9 to 11
Calculation steps:
[( 11 - 9 ) ÷ 9] x 100 = 22.22%
Formula
Percentage change = [(11 - 9) / 9] x 100
Subtract the new number by the original number
11 - 9 = 2
2 ÷ 9 = 0.2222222222222222
0.2222222222222222 x 100 = 22.22%