-59.09% is the change from 809 to 331
Calculation steps:
[( 331 - 809 ) ÷ 809] x 100 = -59.09%
Formula
Percentage change = [(331 - 809) / 809] x 100
Subtract the new number by the original number
331 - 809 = -478
-478 ÷ 809 = -0.5908529048207664
-0.5908529048207664 x 100 = -59.09%