-82.18% is the change from 477 to 85
Calculation steps:
[( 85 - 477 ) ÷ 477] x 100 = -82.18%
Formula
Percentage change = [(85 - 477) / 477] x 100
Subtract the new number by the original number
85 - 477 = -392
-392 ÷ 477 = -0.8218029350104822
-0.8218029350104822 x 100 = -82.18%