66.88% is the change from 311 to 519
Calculation steps:
[( 519 - 311 ) ÷ 311] x 100 = 66.88%
Formula
Percentage change = [(519 - 311) / 311] x 100
Subtract the new number by the original number
519 - 311 = 208
208 ÷ 311 = 0.6688102893890675
0.6688102893890675 x 100 = 66.88%