-86.23% is the change from 581 to 80
Calculation steps:
[( 80 - 581 ) ÷ 581] x 100 = -86.23%
Formula
Percentage change = [(80 - 581) / 581] x 100
Subtract the new number by the original number
80 - 581 = -501
-501 ÷ 581 = -0.8623063683304647
-0.8623063683304647 x 100 = -86.23%