66.6% is the change from 518 to 863
Calculation steps:
[( 863 - 518 ) ÷ 518] x 100 = 66.6%
Formula
Percentage change = [(863 - 518) / 518] x 100
Subtract the new number by the original number
863 - 518 = 345
345 ÷ 518 = 0.666023166023166
0.666023166023166 x 100 = 66.6%