-79.8% is the change from 396 to 80
Calculation steps:
[( 80 - 396 ) ÷ 396] x 100 = -79.8%
Formula
Percentage change = [(80 - 396) / 396] x 100
Subtract the new number by the original number
80 - 396 = -316
-316 ÷ 396 = -0.797979797979798
-0.797979797979798 x 100 = -79.8%