-48.7% is the change from 809 to 415
Calculation steps:
[( 415 - 809 ) ÷ 809] x 100 = -48.7%
Formula
Percentage change = [(415 - 809) / 809] x 100
Subtract the new number by the original number
415 - 809 = -394
-394 ÷ 809 = -0.48702101359703337
-0.48702101359703337 x 100 = -48.7%