-86.37% is the change from 587 to 80
Calculation steps:
[( 80 - 587 ) ÷ 587] x 100 = -86.37%
Formula
Percentage change = [(80 - 587) / 587] x 100
Subtract the new number by the original number
80 - 587 = -507
-507 ÷ 587 = -0.8637137989778535
-0.8637137989778535 x 100 = -86.37%