60.32% is the change from 310 to 497
Calculation steps:
[( 497 - 310 ) ÷ 310] x 100 = 60.32%
Formula
Percentage change = [(497 - 310) / 310] x 100
Subtract the new number by the original number
497 - 310 = 187
187 ÷ 310 = 0.603225806451613
0.603225806451613 x 100 = 60.32%