13.92% is the change from 273 to 311
Calculation steps:
[( 311 - 273 ) ÷ 273] x 100 = 13.92%
Formula
Percentage change = [(311 - 273) / 273] x 100
Subtract the new number by the original number
311 - 273 = 38
38 ÷ 273 = 0.1391941391941392
0.1391941391941392 x 100 = 13.92%