-9.39% is the change from 586 to 531
Calculation steps:
[( 531 - 586 ) ÷ 586] x 100 = -9.39%
Formula
Percentage change = [(531 - 586) / 586] x 100
Subtract the new number by the original number
531 - 586 = -55
-55 ÷ 586 = -0.09385665529010238
-0.09385665529010238 x 100 = -9.39%