21.24% is the change from 518 to 628
Calculation steps:
[( 628 - 518 ) ÷ 518] x 100 = 21.24%
Formula
Percentage change = [(628 - 518) / 518] x 100
Subtract the new number by the original number
628 - 518 = 110
110 ÷ 518 = 0.21235521235521235
0.21235521235521235 x 100 = 21.24%