-52.16% is the change from 809 to 387
Calculation steps:
[( 387 - 809 ) ÷ 809] x 100 = -52.16%
Formula
Percentage change = [(387 - 809) / 809] x 100
Subtract the new number by the original number
387 - 809 = -422
-422 ÷ 809 = -0.5216316440049443
-0.5216316440049443 x 100 = -52.16%