125.56% is the change from 270 to 609
Calculation steps:
[( 609 - 270 ) ÷ 270] x 100 = 125.56%
Formula
Percentage change = [(609 - 270) / 270] x 100
Subtract the new number by the original number
609 - 270 = 339
339 ÷ 270 = 1.2555555555555555
1.2555555555555555 x 100 = 125.56%