-33.37% is the change from 809 to 539
Calculation steps:
[( 539 - 809 ) ÷ 809] x 100 = -33.37%
Formula
Percentage change = [(539 - 809) / 809] x 100
Subtract the new number by the original number
539 - 809 = -270
-270 ÷ 809 = -0.3337453646477132
-0.3337453646477132 x 100 = -33.37%