-83.53% is the change from 844 to 139
Calculation steps:
[( 139 - 844 ) ÷ 844] x 100 = -83.53%
Formula
Percentage change = [(139 - 844) / 844] x 100
Subtract the new number by the original number
139 - 844 = -705
-705 ÷ 844 = -0.8353080568720379
-0.8353080568720379 x 100 = -83.53%