-68.3% is the change from 1000 to 317
Calculation steps:
[( 317 - 1000 ) ÷ 1000] x 100 = -68.3%
Formula
Percentage change = [(317 - 1000) / 1000] x 100
Subtract the new number by the original number
317 - 1000 = -683
-683 ÷ 1000 = -0.683
-0.683 x 100 = -68.3%