25.4% is the change from 311 to 390
Calculation steps:
[( 390 - 311 ) ÷ 311] x 100 = 25.4%
Formula
Percentage change = [(390 - 311) / 311] x 100
Subtract the new number by the original number
390 - 311 = 79
79 ÷ 311 = 0.2540192926045016
0.2540192926045016 x 100 = 25.4%