-80.56% is the change from 499 to 97
Calculation steps:
[( 97 - 499 ) ÷ 499] x 100 = -80.56%
Formula
Percentage change = [(97 - 499) / 499] x 100
Subtract the new number by the original number
97 - 499 = -402
-402 ÷ 499 = -0.8056112224448898
-0.8056112224448898 x 100 = -80.56%