-83.33% is the change from 834 to 139
Calculation steps:
[( 139 - 834 ) ÷ 834] x 100 = -83.33%
Formula
Percentage change = [(139 - 834) / 834] x 100
Subtract the new number by the original number
139 - 834 = -695
-695 ÷ 834 = -0.8333333333333334
-0.8333333333333334 x 100 = -83.33%