The formula to calculate the net amount from the gross amount is:
\[ \text{N} = \text{G} - (\text{G} \times \text{T}) \]
Where:
Gross to net is defined as the conversion of a gross amount to a net amount after tax has been applied.
Example:
Calculation:
\[ \text{N} = 1000 - (1000 \times 0.20) = 1000 - 200 = 800 \text{ dollars} \]
