24.08% is the change from 515 to 639
Calculation steps:
[( 639 - 515 ) ÷ 515] x 100 = 24.08%
Formula
Percentage change = [(639 - 515) / 515] x 100
Subtract the new number by the original number
639 - 515 = 124
124 ÷ 515 = 0.2407766990291262
0.2407766990291262 x 100 = 24.08%