-50.72% is the change from 834 to 411
Calculation steps:
[( 411 - 834 ) ÷ 834] x 100 = -50.72%
Formula
Percentage change = [(411 - 834) / 834] x 100
Subtract the new number by the original number
411 - 834 = -423
-423 ÷ 834 = -0.5071942446043165
-0.5071942446043165 x 100 = -50.72%