-15.1% is the change from 596 to 506
Calculation steps:
[( 506 - 596 ) ÷ 596] x 100 = -15.1%
Formula
Percentage change = [(506 - 596) / 596] x 100
Subtract the new number by the original number
506 - 596 = -90
-90 ÷ 596 = -0.15100671140939598
-0.15100671140939598 x 100 = -15.1%