-86.93% is the change from 612 to 80
Calculation steps:
[( 80 - 612 ) ÷ 612] x 100 = -86.93%
Formula
Percentage change = [(80 - 612) / 612] x 100
Subtract the new number by the original number
80 - 612 = -532
-532 ÷ 612 = -0.869281045751634
-0.869281045751634 x 100 = -86.93%