How to calculate new vs existing sales from total sales

[brookck]

Trying to create a formula that can derive the new sales, out of a table that includes all sales. breakout is determined by time that can be selected by a parameter. So in essence, I want to crerate a measure that will break out the new sales by customer ID where they were not a customer 12 months prior to today. Sales reps are getting different comm $ based on existing vs new customers. I am struggling to find a DAX formula that can derive that automatically.

Any examples of this?

[v-jiascu-msft · Accepted solution]

Hi @brookck,

Please share a sample of your data. The pbix file would be great. We can't write down a DAX formula without data and its structure.

Best Regards,

Dale