31.11% is the change from 270 to 354
Calculation steps:
[( 354 - 270 ) ÷ 270] x 100 = 31.11%
Formula
Percentage change = [(354 - 270) / 270] x 100
Subtract the new number by the original number
354 - 270 = 84
84 ÷ 270 = 0.3111111111111111
0.3111111111111111 x 100 = 31.11%