-3.35% is the change from 328 to 317
Calculation steps:
[( 317 - 328 ) ÷ 328] x 100 = -3.35%
Formula
Percentage change = [(317 - 328) / 328] x 100
Subtract the new number by the original number
317 - 328 = -11
-11 ÷ 328 = -0.03353658536585366
-0.03353658536585366 x 100 = -3.35%