Calculate current inventory of cylinders from the first delivery to the most recent

[BudMan512]

Hi,

I have a table of data that shows the number of cylinders delivered to various customers, and the number of cylinders picked up.  It also includes a calculation of the difference between the two.

I need to add a column for the Current Inventory which dates back to the very first delivery as can be seen below.
Would someone kindly provide me with the DAX to determine the Current Inventory?

A link to the data is below.

CYLINDERS.xlsx

Thanks,

Bud

[BudMan512]

@lbendlin 

Thank you, that worked as requested!

[lbendlin · Accepted solution]