-82.11% is the change from 475 to 85
Calculation steps:
[( 85 - 475 ) ÷ 475] x 100 = -82.11%
Formula
Percentage change = [(85 - 475) / 475] x 100
Subtract the new number by the original number
85 - 475 = -390
-390 ÷ 475 = -0.8210526315789474
-0.8210526315789474 x 100 = -82.11%