12.59% is the change from 270 to 304
Calculation steps:
[( 304 - 270 ) ÷ 270] x 100 = 12.59%
Formula
Percentage change = [(304 - 270) / 270] x 100
Subtract the new number by the original number
304 - 270 = 34
34 ÷ 270 = 0.1259259259259259
0.1259259259259259 x 100 = 12.59%