-62.89% is the change from 865 to 321
Calculation steps:
[( 321 - 865 ) ÷ 865] x 100 = -62.89%
Formula
Percentage change = [(321 - 865) / 865] x 100
Subtract the new number by the original number
321 - 865 = -544
-544 ÷ 865 = -0.6289017341040463
-0.6289017341040463 x 100 = -62.89%