38.06% is the change from 310 to 428
Calculation steps:
[( 428 - 310 ) ÷ 310] x 100 = 38.06%
Formula
Percentage change = [(428 - 310) / 310] x 100
Subtract the new number by the original number
428 - 310 = 118
118 ÷ 310 = 0.38064516129032255
0.38064516129032255 x 100 = 38.06%