7.24% is the change from 290 to 311
Calculation steps:
[( 311 - 290 ) ÷ 290] x 100 = 7.24%
Formula
Percentage change = [(311 - 290) / 290] x 100
Subtract the new number by the original number
311 - 290 = 21
21 ÷ 290 = 0.07241379310344828
0.07241379310344828 x 100 = 7.24%