-14.38% is the change from 591 to 506
Calculation steps:
[( 506 - 591 ) ÷ 591] x 100 = -14.38%
Formula
Percentage change = [(506 - 591) / 591] x 100
Subtract the new number by the original number
506 - 591 = -85
-85 ÷ 591 = -0.14382402707275804
-0.14382402707275804 x 100 = -14.38%