-64.28% is the change from 921 to 329
Calculation steps:
[( 329 - 921 ) ÷ 921] x 100 = -64.28%
Formula
Percentage change = [(329 - 921) / 921] x 100
Subtract the new number by the original number
329 - 921 = -592
-592 ÷ 921 = -0.6427795874049945
-0.6427795874049945 x 100 = -64.28%