-3.34% is the change from 329 to 318
Calculation steps:
[( 318 - 329 ) ÷ 329] x 100 = -3.34%
Formula
Percentage change = [(318 - 329) / 329] x 100
Subtract the new number by the original number
318 - 329 = -11
-11 ÷ 329 = -0.03343465045592705
-0.03343465045592705 x 100 = -3.34%