-85.48% is the change from 551 to 80
Calculation steps:
[( 80 - 551 ) ÷ 551] x 100 = -85.48%
Formula
Percentage change = [(80 - 551) / 551] x 100
Subtract the new number by the original number
80 - 551 = -471
-471 ÷ 551 = -0.8548094373865699
-0.8548094373865699 x 100 = -85.48%