65.81% is the change from 310 to 514
Calculation steps:
[( 514 - 310 ) ÷ 310] x 100 = 65.81%
Formula
Percentage change = [(514 - 310) / 310] x 100
Subtract the new number by the original number
514 - 310 = 204
204 ÷ 310 = 0.6580645161290323
0.6580645161290323 x 100 = 65.81%