-98.59% is the change from 849 to 12
Calculation steps:
[( 12 - 849 ) ÷ 849] x 100 = -98.59%
Formula
Percentage change = [(12 - 849) / 849] x 100
Subtract the new number by the original number
12 - 849 = -837
-837 ÷ 849 = -0.9858657243816255
-0.9858657243816255 x 100 = -98.59%