57.78% is the change from 270 to 426
Calculation steps:
[( 426 - 270 ) ÷ 270] x 100 = 57.78%
Formula
Percentage change = [(426 - 270) / 270] x 100
Subtract the new number by the original number
426 - 270 = 156
156 ÷ 270 = 0.5777777777777777
0.5777777777777777 x 100 = 57.78%