-61.31% is the change from 809 to 313
Calculation steps:
[( 313 - 809 ) ÷ 809] x 100 = -61.31%
Formula
Percentage change = [(313 - 809) / 809] x 100
Subtract the new number by the original number
313 - 809 = -496
-496 ÷ 809 = -0.6131025957972805
-0.6131025957972805 x 100 = -61.31%