-35.17% is the change from 489 to 317
Calculation steps:
[( 317 - 489 ) ÷ 489] x 100 = -35.17%
Formula
Percentage change = [(317 - 489) / 489] x 100
Subtract the new number by the original number
317 - 489 = -172
-172 ÷ 489 = -0.35173824130879344
-0.35173824130879344 x 100 = -35.17%