-13.65% is the change from 586 to 506
Calculation steps:
[( 506 - 586 ) ÷ 586] x 100 = -13.65%
Formula
Percentage change = [(506 - 586) / 586] x 100
Subtract the new number by the original number
506 - 586 = -80
-80 ÷ 586 = -0.13651877133105803
-0.13651877133105803 x 100 = -13.65%