-62.92% is the change from 855 to 317
Calculation steps:
[( 317 - 855 ) ÷ 855] x 100 = -62.92%
Formula
Percentage change = [(317 - 855) / 855] x 100
Subtract the new number by the original number
317 - 855 = -538
-538 ÷ 855 = -0.6292397660818714
-0.6292397660818714 x 100 = -62.92%