-83.56% is the change from 827 to 136
Calculation steps:
[( 136 - 827 ) ÷ 827] x 100 = -83.56%
Formula
Percentage change = [(136 - 827) / 827] x 100
Subtract the new number by the original number
136 - 827 = -691
-691 ÷ 827 = -0.8355501813784765
-0.8355501813784765 x 100 = -83.56%