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I need to create a new column to calculate column B. what's the DAX i can use? thanks!
Hi,
Given column A, values in column B can be calculated. I am sure your dataset is very different from what you have shared here. Do you have a Date column in your dataset? Share your data here.
no date required for this calculation, see below.
Hey @Anonymous ,
You need to create a Previous Row Dax to perform this calc.
Take a look on the picture. First, I create the measure Previous Row, to check the values and create a virtual column with values based on the previous row. After that, you can create a new measure to multiplicate:

Regards,
Marcel Magalhães
Microsoft Power BI Official Partner
MCT | Certified PL-300 Power BI
Sorry, I've updated my question. I need DAX for Column B, which I've got my calculation included in the ( ).
thanks
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