Hi @Darren_Tuck , welcome to the forum
Thank you for your nice comment.
I’m not sure that a formula field is what you need in this case. I think you could create your tasks as per below, while using a simple number field for your units:
Task name | Units (number field) |
---|---|
Task 1 | 10,000 |
Task 2 | -300 |
Task 3 | -400 |
SUM | 9,300 |
If you use positive and negative numbers you could get your tally from the SUM function at the bottom of your list. And you could also create charts in your project’s Dashboard.
Here is a useful guide that you could also refer to:
Let me know if I missed something!