-51.56% is the change from 834 to 404
Calculation steps:
[( 404 - 834 ) ÷ 834] x 100 = -51.56%
Formula
Percentage change = [(404 - 834) / 834] x 100
Subtract the new number by the original number
404 - 834 = -430
-430 ÷ 834 = -0.5155875299760192
-0.5155875299760192 x 100 = -51.56%