-67.1% is the change from 1000 to 329
Calculation steps:
[( 329 - 1000 ) ÷ 1000] x 100 = -67.1%
Formula
Percentage change = [(329 - 1000) / 1000] x 100
Subtract the new number by the original number
329 - 1000 = -671
-671 ÷ 1000 = -0.671
-0.671 x 100 = -67.1%