22.22% is the change from 540 to 660
Calculation steps:
[( 660 - 540 ) ÷ 540] x 100 = 22.22%
Formula
Percentage change = [(660 - 540) / 540] x 100
Subtract the new number by the original number
660 - 540 = 120
120 ÷ 540 = 0.2222222222222222
0.2222222222222222 x 100 = 22.22%