-63.19% is the change from 872 to 321
Calculation steps:
[( 321 - 872 ) ÷ 872] x 100 = -63.19%
Formula
Percentage change = [(321 - 872) / 872] x 100
Subtract the new number by the original number
321 - 872 = -551
-551 ÷ 872 = -0.6318807339449541
-0.6318807339449541 x 100 = -63.19%