15.92% is the change from 515 to 597
Calculation steps:
[( 597 - 515 ) ÷ 515] x 100 = 15.92%
Formula
Percentage change = [(597 - 515) / 515] x 100
Subtract the new number by the original number
597 - 515 = 82
82 ÷ 515 = 0.15922330097087378
0.15922330097087378 x 100 = 15.92%