67.18% is the change from 518 to 866
Calculation steps:
[( 866 - 518 ) ÷ 518] x 100 = 67.18%
Formula
Percentage change = [(866 - 518) / 518] x 100
Subtract the new number by the original number
866 - 518 = 348
348 ÷ 518 = 0.6718146718146718
0.6718146718146718 x 100 = 67.18%