13.09% is the change from 275 to 311
Calculation steps:
[( 311 - 275 ) ÷ 275] x 100 = 13.09%
Formula
Percentage change = [(311 - 275) / 275] x 100
Subtract the new number by the original number
311 - 275 = 36
36 ÷ 275 = 0.13090909090909092
0.13090909090909092 x 100 = 13.09%