-3.04% is the change from 329 to 319
Calculation steps:
[( 319 - 329 ) ÷ 329] x 100 = -3.04%
Formula
Percentage change = [(319 - 329) / 329] x 100
Subtract the new number by the original number
319 - 329 = -10
-10 ÷ 329 = -0.030395136778115502
-0.030395136778115502 x 100 = -3.04%