-81.9% is the change from 442 to 80
Calculation steps:
[( 80 - 442 ) ÷ 442] x 100 = -81.9%
Formula
Percentage change = [(80 - 442) / 442] x 100
Subtract the new number by the original number
80 - 442 = -362
-362 ÷ 442 = -0.8190045248868778
-0.8190045248868778 x 100 = -81.9%