-59.88% is the change from 800 to 321
Calculation steps:
[( 321 - 800 ) ÷ 800] x 100 = -59.88%
Formula
Percentage change = [(321 - 800) / 800] x 100
Subtract the new number by the original number
321 - 800 = -479
-479 ÷ 800 = -0.59875
-0.59875 x 100 = -59.88%