28.15% is the change from 270 to 346
Calculation steps:
[( 346 - 270 ) ÷ 270] x 100 = 28.15%
Formula
Percentage change = [(346 - 270) / 270] x 100
Subtract the new number by the original number
346 - 270 = 76
76 ÷ 270 = 0.2814814814814815
0.2814814814814815 x 100 = 28.15%