-62.71% is the change from 834 to 311
Calculation steps:
[( 311 - 834 ) ÷ 834] x 100 = -62.71%
Formula
Percentage change = [(311 - 834) / 834] x 100
Subtract the new number by the original number
311 - 834 = -523
-523 ÷ 834 = -0.6270983213429256
-0.6270983213429256 x 100 = -62.71%