70.37% is the change from 270 to 460
Calculation steps:
[( 460 - 270 ) ÷ 270] x 100 = 70.37%
Formula
Percentage change = [(460 - 270) / 270] x 100
Subtract the new number by the original number
460 - 270 = 190
190 ÷ 270 = 0.7037037037037037
0.7037037037037037 x 100 = 70.37%