28.57% is the change from 518 to 666
Calculation steps:
[( 666 - 518 ) ÷ 518] x 100 = 28.57%
Formula
Percentage change = [(666 - 518) / 518] x 100
Subtract the new number by the original number
666 - 518 = 148
148 ÷ 518 = 0.2857142857142857
0.2857142857142857 x 100 = 28.57%