-99.18% is the change from 849 to 7
Calculation steps:
[( 7 - 849 ) ÷ 849] x 100 = -99.18%
Formula
Percentage change = [(7 - 849) / 849] x 100
Subtract the new number by the original number
7 - 849 = -842
-842 ÷ 849 = -0.9917550058892816
-0.9917550058892816 x 100 = -99.18%