-6.76% is the change from 340 to 317
Calculation steps:
[( 317 - 340 ) ÷ 340] x 100 = -6.76%
Formula
Percentage change = [(317 - 340) / 340] x 100
Subtract the new number by the original number
317 - 340 = -23
-23 ÷ 340 = -0.06764705882352941
-0.06764705882352941 x 100 = -6.76%