-56.14% is the change from 586 to 257
Calculation steps:
[( 257 - 586 ) ÷ 586] x 100 = -56.14%
Formula
Percentage change = [(257 - 586) / 586] x 100
Subtract the new number by the original number
257 - 586 = -329
-329 ÷ 586 = -0.5614334470989761
-0.5614334470989761 x 100 = -56.14%