30.32% is the change from 310 to 404
Calculation steps:
[( 404 - 310 ) ÷ 310] x 100 = 30.32%
Formula
Percentage change = [(404 - 310) / 310] x 100
Subtract the new number by the original number
404 - 310 = 94
94 ÷ 310 = 0.3032258064516129
0.3032258064516129 x 100 = 30.32%