-82.25% is the change from 479 to 85
Calculation steps:
[( 85 - 479 ) ÷ 479] x 100 = -82.25%
Formula
Percentage change = [(85 - 479) / 479] x 100
Subtract the new number by the original number
85 - 479 = -394
-394 ÷ 479 = -0.8225469728601252
-0.8225469728601252 x 100 = -82.25%
Example