-83.89% is the change from 844 to 136
Calculation steps:
[( 136 - 844 ) ÷ 844] x 100 = -83.89%
Formula
Percentage change = [(136 - 844) / 844] x 100
Subtract the new number by the original number
136 - 844 = -708
-708 ÷ 844 = -0.8388625592417062
-0.8388625592417062 x 100 = -83.89%