-30.34% is the change from 834 to 581
Calculation steps:
[( 581 - 834 ) ÷ 834] x 100 = -30.34%
Formula
Percentage change = [(581 - 834) / 834] x 100
Subtract the new number by the original number
581 - 834 = -253
-253 ÷ 834 = -0.30335731414868106
-0.30335731414868106 x 100 = -30.34%