-86.14% is the change from 577 to 80
Calculation steps:
[( 80 - 577 ) ÷ 577] x 100 = -86.14%
Formula
Percentage change = [(80 - 577) / 577] x 100
Subtract the new number by the original number
80 - 577 = -497
-497 ÷ 577 = -0.8613518197573656
-0.8613518197573656 x 100 = -86.14%