-86.73% is the change from 603 to 80
Calculation steps:
[( 80 - 603 ) ÷ 603] x 100 = -86.73%
Formula
Percentage change = [(80 - 603) / 603] x 100
Subtract the new number by the original number
80 - 603 = -523
-523 ÷ 603 = -0.867330016583748
-0.867330016583748 x 100 = -86.73%