-40.9% is the change from 983 to 581
Calculation steps:
[( 581 - 983 ) ÷ 983] x 100 = -40.9%
Formula
Percentage change = [(581 - 983) / 983] x 100
Subtract the new number by the original number
581 - 983 = -402
-402 ÷ 983 = -0.40895218718209564
-0.40895218718209564 x 100 = -40.9%