-35.97% is the change from 809 to 518
Calculation steps:
[( 518 - 809 ) ÷ 809] x 100 = -35.97%
Formula
Percentage change = [(518 - 809) / 809] x 100
Subtract the new number by the original number
518 - 809 = -291
-291 ÷ 809 = -0.35970333745364647
-0.35970333745364647 x 100 = -35.97%