-13.59% is the change from 596 to 515
Calculation steps:
[( 515 - 596 ) ÷ 596] x 100 = -13.59%
Formula
Percentage change = [(515 - 596) / 596] x 100
Subtract the new number by the original number
515 - 596 = -81
-81 ÷ 596 = -0.13590604026845637
-0.13590604026845637 x 100 = -13.59%