15.25% is the change from 518 to 597
Calculation steps:
[( 597 - 518 ) ÷ 518] x 100 = 15.25%
Formula
Percentage change = [(597 - 518) / 518] x 100
Subtract the new number by the original number
597 - 518 = 79
79 ÷ 518 = 0.1525096525096525
0.1525096525096525 x 100 = 15.25%