N.Y. Comp. Codes R. & Regs. tit. 23, § 600.8
(b) With respect to any assumptions about a recipient’s future monthly sales necessary to calculate the disclosures required by this Part, a provider shall use the estimated monthly sales projection described below:
(1) the estimated monthly sales projection shall be calculated as the recipient’s historical average of:
(4) a provider may exclude from the average calculation required by paragraph (1) of this subdivision:
(c) If a provider must make additional estimates or assumptions other than a recipient’s estimated monthly sales projection to provide disclosures required by this Part, the provider shall: