66.24% is the change from 311 to 517
Calculation steps:
[( 517 - 311 ) ÷ 311] x 100 = 66.24%
Formula
Percentage change = [(517 - 311) / 311] x 100
Subtract the new number by the original number
517 - 311 = 206
206 ÷ 311 = 0.662379421221865
0.662379421221865 x 100 = 66.24%