9.01% is the change from 222 to 242
Calculation steps:
[( 242 - 222 ) ÷ 222] x 100 = 9.01%
Formula
Percentage change = [(242 - 222) / 222] x 100
Subtract the new number by the original number
242 - 222 = 20
20 ÷ 222 = 0.09009009009009009
0.09009009009009009 x 100 = 9.01%