18.15% is the change from 518 to 612
Calculation steps:
[( 612 - 518 ) ÷ 518] x 100 = 18.15%
Formula
Percentage change = [(612 - 518) / 518] x 100
Subtract the new number by the original number
612 - 518 = 94
94 ÷ 518 = 0.18146718146718147
0.18146718146718147 x 100 = 18.15%