-51.05% is the change from 809 to 396
Calculation steps:
[( 396 - 809 ) ÷ 809] x 100 = -51.05%
Formula
Percentage change = [(396 - 809) / 809] x 100
Subtract the new number by the original number
396 - 809 = -413
-413 ÷ 809 = -0.5105067985166872
-0.5105067985166872 x 100 = -51.05%