12.97% is the change from 239 to 270
Calculation steps:
[( 270 - 239 ) ÷ 239] x 100 = 12.97%
Formula
Percentage change = [(270 - 239) / 239] x 100
Subtract the new number by the original number
270 - 239 = 31
31 ÷ 239 = 0.1297071129707113
0.1297071129707113 x 100 = 12.97%