-83.63% is the change from 849 to 139
Calculation steps:
[( 139 - 849 ) ÷ 849] x 100 = -83.63%
Formula
Percentage change = [(139 - 849) / 849] x 100
Subtract the new number by the original number
139 - 849 = -710
-710 ÷ 849 = -0.8362779740871613
-0.8362779740871613 x 100 = -83.63%