-51.08% is the change from 834 to 408
Calculation steps:
[( 408 - 834 ) ÷ 834] x 100 = -51.08%
Formula
Percentage change = [(408 - 834) / 834] x 100
Subtract the new number by the original number
408 - 834 = -426
-426 ÷ 834 = -0.5107913669064749
-0.5107913669064749 x 100 = -51.08%