-83.81% is the change from 834 to 135
Calculation steps:
[( 135 - 834 ) ÷ 834] x 100 = -83.81%
Formula
Percentage change = [(135 - 834) / 834] x 100
Subtract the new number by the original number
135 - 834 = -699
-699 ÷ 834 = -0.8381294964028777
-0.8381294964028777 x 100 = -83.81%