-34.73% is the change from 809 to 528
Calculation steps:
[( 528 - 809 ) ÷ 809] x 100 = -34.73%
Formula
Percentage change = [(528 - 809) / 809] x 100
Subtract the new number by the original number
528 - 809 = -281
-281 ÷ 809 = -0.3473423980222497
-0.3473423980222497 x 100 = -34.73%