-90.44% is the change from 586 to 56
Calculation steps:
[( 56 - 586 ) ÷ 586] x 100 = -90.44%
Formula
Percentage change = [(56 - 586) / 586] x 100
Subtract the new number by the original number
56 - 586 = -530
-530 ÷ 586 = -0.9044368600682594
-0.9044368600682594 x 100 = -90.44%