69.06% is the change from 307 to 519
Calculation steps:
[( 519 - 307 ) ÷ 307] x 100 = 69.06%
Formula
Percentage change = [(519 - 307) / 307] x 100
Subtract the new number by the original number
519 - 307 = 212
212 ÷ 307 = 0.6905537459283387
0.6905537459283387 x 100 = 69.06%