-73.19% is the change from 317 to 85
Calculation steps:
[( 85 - 317 ) ÷ 317] x 100 = -73.19%
Formula
Percentage change = [(85 - 317) / 317] x 100
Subtract the new number by the original number
85 - 317 = -232
-232 ÷ 317 = -0.7318611987381703
-0.7318611987381703 x 100 = -73.19%