-52.88% is the change from 834 to 393
Calculation steps:
[( 393 - 834 ) ÷ 834] x 100 = -52.88%
Formula
Percentage change = [(393 - 834) / 834] x 100
Subtract the new number by the original number
393 - 834 = -441
-441 ÷ 834 = -0.5287769784172662
-0.5287769784172662 x 100 = -52.88%