-83.26% is the change from 478 to 80
Calculation steps:
[( 80 - 478 ) ÷ 478] x 100 = -83.26%
Formula
Percentage change = [(80 - 478) / 478] x 100
Subtract the new number by the original number
80 - 478 = -398
-398 ÷ 478 = -0.8326359832635983
-0.8326359832635983 x 100 = -83.26%