-34.61% is the change from 809 to 529
Calculation steps:
[( 529 - 809 ) ÷ 809] x 100 = -34.61%
Formula
Percentage change = [(529 - 809) / 809] x 100
Subtract the new number by the original number
529 - 809 = -280
-280 ÷ 809 = -0.34610630407911
-0.34610630407911 x 100 = -34.61%