-97.79% is the change from 814 to 18
Calculation steps:
[( 18 - 814 ) ÷ 814] x 100 = -97.79%
Formula
Percentage change = [(18 - 814) / 814] x 100
Subtract the new number by the original number
18 - 814 = -796
-796 ÷ 814 = -0.9778869778869779
-0.9778869778869779 x 100 = -97.79%