23.3% is the change from 515 to 635
Calculation steps:
[( 635 - 515 ) ÷ 515] x 100 = 23.3%
Formula
Percentage change = [(635 - 515) / 515] x 100
Subtract the new number by the original number
635 - 515 = 120
120 ÷ 515 = 0.23300970873786409
0.23300970873786409 x 100 = 23.3%