-63.52% is the change from 880 to 321
Calculation steps:
[( 321 - 880 ) ÷ 880] x 100 = -63.52%
Formula
Percentage change = [(321 - 880) / 880] x 100
Subtract the new number by the original number
321 - 880 = -559
-559 ÷ 880 = -0.6352272727272728
-0.6352272727272728 x 100 = -63.52%
Example