23.94% is the change from 518 to 642
Calculation steps:
[( 642 - 518 ) ÷ 518] x 100 = 23.94%
Formula
Percentage change = [(642 - 518) / 518] x 100
Subtract the new number by the original number
642 - 518 = 124
124 ÷ 518 = 0.23938223938223938
0.23938223938223938 x 100 = 23.94%