55.19% is the change from 270 to 419
Calculation steps:
[( 419 - 270 ) ÷ 270] x 100 = 55.19%
Formula
Percentage change = [(419 - 270) / 270] x 100
Subtract the new number by the original number
419 - 270 = 149
149 ÷ 270 = 0.5518518518518518
0.5518518518518518 x 100 = 55.19%