-32.04% is the change from 646 to 439
Calculation steps:
[( 439 - 646 ) ÷ 646] x 100 = -32.04%
Formula
Percentage change = [(439 - 646) / 646] x 100
Subtract the new number by the original number
439 - 646 = -207
-207 ÷ 646 = -0.3204334365325077
-0.3204334365325077 x 100 = -32.04%