12.73% is the change from 275 to 310
Calculation steps:
[( 310 - 275 ) ÷ 275] x 100 = 12.73%
Formula
Percentage change = [(310 - 275) / 275] x 100
Subtract the new number by the original number
310 - 275 = 35
35 ÷ 275 = 0.12727272727272726
0.12727272727272726 x 100 = 12.73%