-86.71% is the change from 602 to 80
Calculation steps:
[( 80 - 602 ) ÷ 602] x 100 = -86.71%
Formula
Percentage change = [(80 - 602) / 602] x 100
Subtract the new number by the original number
80 - 602 = -522
-522 ÷ 602 = -0.867109634551495
-0.867109634551495 x 100 = -86.71%