-60.32% is the change from 809 to 321
Calculation steps:
[( 321 - 809 ) ÷ 809] x 100 = -60.32%
Formula
Percentage change = [(321 - 809) / 809] x 100
Subtract the new number by the original number
321 - 809 = -488
-488 ÷ 809 = -0.6032138442521632
-0.6032138442521632 x 100 = -60.32%