-13.74% is the change from 597 to 515
Calculation steps:
[( 515 - 597 ) ÷ 597] x 100 = -13.74%
Formula
Percentage change = [(515 - 597) / 597] x 100
Subtract the new number by the original number
515 - 597 = -82
-82 ÷ 597 = -0.1373534338358459
-0.1373534338358459 x 100 = -13.74%