-59.23% is the change from 834 to 340
Calculation steps:
[( 340 - 834 ) ÷ 834] x 100 = -59.23%
Formula
Percentage change = [(340 - 834) / 834] x 100
Subtract the new number by the original number
340 - 834 = -494
-494 ÷ 834 = -0.592326139088729
-0.592326139088729 x 100 = -59.23%