-35.85% is the change from 809 to 519
Calculation steps:
[( 519 - 809 ) ÷ 809] x 100 = -35.85%
Formula
Percentage change = [(519 - 809) / 809] x 100
Subtract the new number by the original number
519 - 809 = -290
-290 ÷ 809 = -0.3584672435105068
-0.3584672435105068 x 100 = -35.85%