31.08% is the change from 518 to 679
Calculation steps:
[( 679 - 518 ) ÷ 518] x 100 = 31.08%
Formula
Percentage change = [(679 - 518) / 518] x 100
Subtract the new number by the original number
679 - 518 = 161
161 ÷ 518 = 0.3108108108108108
0.3108108108108108 x 100 = 31.08%