66.56% is the change from 311 to 518
Calculation steps:
[( 518 - 311 ) ÷ 311] x 100 = 66.56%
Formula
Percentage change = [(518 - 311) / 311] x 100
Subtract the new number by the original number
518 - 311 = 207
207 ÷ 311 = 0.6655948553054662
0.6655948553054662 x 100 = 66.56%