49.26% is the change from 270 to 403
Calculation steps:
[( 403 - 270 ) ÷ 270] x 100 = 49.26%
Formula
Percentage change = [(403 - 270) / 270] x 100
Subtract the new number by the original number
403 - 270 = 133
133 ÷ 270 = 0.4925925925925926
0.4925925925925926 x 100 = 49.26%