122.22% is the change from 270 to 600
Calculation steps:
[( 600 - 270 ) ÷ 270] x 100 = 122.22%
Formula
Percentage change = [(600 - 270) / 270] x 100
Subtract the new number by the original number
600 - 270 = 330
330 ÷ 270 = 1.2222222222222223
1.2222222222222223 x 100 = 122.22%