-88.42% is the change from 691 to 80
Calculation steps:
[( 80 - 691 ) ÷ 691] x 100 = -88.42%
Formula
Percentage change = [(80 - 691) / 691] x 100
Subtract the new number by the original number
80 - 691 = -611
-611 ÷ 691 = -0.8842257597684515
-0.8842257597684515 x 100 = -88.42%