-9.9% is the change from 586 to 528
Calculation steps:
[( 528 - 586 ) ÷ 586] x 100 = -9.9%
Formula
Percentage change = [(528 - 586) / 586] x 100
Subtract the new number by the original number
528 - 586 = -58
-58 ÷ 586 = -0.09897610921501707
-0.09897610921501707 x 100 = -9.9%