-62.98% is the change from 867 to 321
Calculation steps:
[( 321 - 867 ) ÷ 867] x 100 = -62.98%
Formula
Percentage change = [(321 - 867) / 867] x 100
Subtract the new number by the original number
321 - 867 = -546
-546 ÷ 867 = -0.629757785467128
-0.629757785467128 x 100 = -62.98%