-83.79% is the change from 833 to 135
Calculation steps:
[( 135 - 833 ) ÷ 833] x 100 = -83.79%
Formula
Percentage change = [(135 - 833) / 833] x 100
Subtract the new number by the original number
135 - 833 = -698
-698 ÷ 833 = -0.8379351740696278
-0.8379351740696278 x 100 = -83.79%