-86.51% is the change from 593 to 80
Calculation steps:
[( 80 - 593 ) ÷ 593] x 100 = -86.51%
Formula
Percentage change = [(80 - 593) / 593] x 100
Subtract the new number by the original number
80 - 593 = -513
-513 ÷ 593 = -0.8650927487352446
-0.8650927487352446 x 100 = -86.51%