-81.65% is the change from 436 to 80
Calculation steps:
[( 80 - 436 ) ÷ 436] x 100 = -81.65%
Formula
Percentage change = [(80 - 436) / 436] x 100
Subtract the new number by the original number
80 - 436 = -356
-356 ÷ 436 = -0.8165137614678899
-0.8165137614678899 x 100 = -81.65%