-82.05% is the change from 479 to 86
Calculation steps:
[( 86 - 479 ) ÷ 479] x 100 = -82.05%
Formula
Percentage change = [(86 - 479) / 479] x 100
Subtract the new number by the original number
86 - 479 = -393
-393 ÷ 479 = -0.8204592901878914
-0.8204592901878914 x 100 = -82.05%