23.12% is the change from 519 to 639
Calculation steps:
[( 639 - 519 ) ÷ 519] x 100 = 23.12%
Formula
Percentage change = [(639 - 519) / 519] x 100
Subtract the new number by the original number
639 - 519 = 120
120 ÷ 519 = 0.23121387283236994
0.23121387283236994 x 100 = 23.12%