162.58% is the change from 310 to 814
Calculation steps:
[( 814 - 310 ) ÷ 310] x 100 = 162.58%
Formula
Percentage change = [(814 - 310) / 310] x 100
Subtract the new number by the original number
814 - 310 = 504
504 ÷ 310 = 1.6258064516129032
1.6258064516129032 x 100 = 162.58%