-36.59% is the change from 809 to 513
Calculation steps:
[( 513 - 809 ) ÷ 809] x 100 = -36.59%
Formula
Percentage change = [(513 - 809) / 809] x 100
Subtract the new number by the original number
513 - 809 = -296
-296 ÷ 809 = -0.3658838071693449
-0.3658838071693449 x 100 = -36.59%