-83.94% is the change from 498 to 80
Calculation steps:
[( 80 - 498 ) ÷ 498] x 100 = -83.94%
Formula
Percentage change = [(80 - 498) / 498] x 100
Subtract the new number by the original number
80 - 498 = -418
-418 ÷ 498 = -0.8393574297188755
-0.8393574297188755 x 100 = -83.94%