-80.91% is the change from 419 to 80
Calculation steps:
[( 80 - 419 ) ÷ 419] x 100 = -80.91%
Formula
Percentage change = [(80 - 419) / 419] x 100
Subtract the new number by the original number
80 - 419 = -339
-339 ÷ 419 = -0.8090692124105012
-0.8090692124105012 x 100 = -80.91%