60.74% is the change from 270 to 434
Calculation steps:
[( 434 - 270 ) ÷ 270] x 100 = 60.74%
Formula
Percentage change = [(434 - 270) / 270] x 100
Subtract the new number by the original number
434 - 270 = 164
164 ÷ 270 = 0.6074074074074074
0.6074074074074074 x 100 = 60.74%