-81.89% is the change from 834 to 151
Calculation steps:
[( 151 - 834 ) ÷ 834] x 100 = -81.89%
Formula
Percentage change = [(151 - 834) / 834] x 100
Subtract the new number by the original number
151 - 834 = -683
-683 ÷ 834 = -0.8189448441247003
-0.8189448441247003 x 100 = -81.89%