-85.96% is the change from 470 to 66
Calculation steps:
[( 66 - 470 ) ÷ 470] x 100 = -85.96%
Formula
Percentage change = [(66 - 470) / 470] x 100
Subtract the new number by the original number
66 - 470 = -404
-404 ÷ 470 = -0.8595744680851064
-0.8595744680851064 x 100 = -85.96%