Current day vs Last Day of previous month difference

Hello,
I wanna know if there is a way to calculate the difference of 2 periods as follow:
The difference would be current day sale minus the last working day of previous month.

Date Sum Difference Note
8/29/2024 2
8/30/2024 3 Last working day
8/31/2024 No data
9/1/2024 No data
9/2/2024 4 1
9/3/2024 5 2
9/4/2024 6 3

Hi @qtngo,
Please take a look at the attached Arena view. Although the sample data is different, the calculated fields should operate the same way once you plug in your fields. I included text that explains the operations as well. Let me know if you have any additional questions!
Current day vs Last Day of previous month difference

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