-0.3% is the change from 330 to 329
Calculation steps:
[( 329 - 330 ) ÷ 330] x 100 = -0.3%
Formula
Percentage change = [(329 - 330) / 330] x 100
Subtract the new number by the original number
329 - 330 = -1
-1 ÷ 330 = -0.0030303030303030303
-0.0030303030303030303 x 100 = -0.3%