-49.16% is the change from 834 to 424
Calculation steps:
[( 424 - 834 ) ÷ 834] x 100 = -49.16%
Formula
Percentage change = [(424 - 834) / 834] x 100
Subtract the new number by the original number
424 - 834 = -410
-410 ÷ 834 = -0.49160671462829736
-0.49160671462829736 x 100 = -49.16%