Best Practice - Calculate column from first row value

[Anonymous]

I would like to calculate the forecast with "what if" parameters for the next 5 years.

I currently have the numbers (such as revenue, clients, etc...) for this year (2018) and would like to calculate 2019-2023 such as they are functions of my constant number of 2018 and the "what if" parametrers. What is the best practice to create such table in PowerBI? Should I create a table with the first row being 2018 full of constant and leave rows 2019-2023 empty? If I do so what would be the function to apply on the column so it keeps the first value as a constant?

Any suggestion is welcome since I have absolutely no idea where to start.

[v-yuta-msft]

@Anonymous ,

Could you please clarify more details and share some sample data?

Community Support Team _ Jimmy Tao

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