# Subtracting from another cell when data changes

Options

Hello All!

I am trying to have a cell that is reflecting the total of projects I am working on to subtract from another cell whenever that cell is change, reflecting that the project is complete. In the screenshot below I want the Total Cell to Subtract the Completed cell. The formula grabbing other data from this sheet looks like this.

=SUM([Column3]1, [Column3]17) (Total Cell)

=SUM([Column3]10, [Column3]26) (Completed Cell)

Any help would be appreciated!

• ✭✭✭✭✭✭
Options

You would simply subtract one cell from the other

=[Column Name]1 - [Column Name]2

If either or both cells have formulas, you can subtract one formula from the other or even a cell from a formula or the other way around.

=SUM(.....) - SUM(.....)

=SUM(.....) - [Column Name]2

=[Column Name]1 - SUM(.....)

• ✭✭✭✭✭✭
Options

You would simply subtract one cell from the other

=[Column Name]1 - [Column Name]2

If either or both cells have formulas, you can subtract one formula from the other or even a cell from a formula or the other way around.

=SUM(.....) - SUM(.....)

=SUM(.....) - [Column Name]2

=[Column Name]1 - SUM(.....)

• Options

@Paul Newcome thank you! I am new to this. I truly didn't think it would be that simple... Lol!

• ✭✭✭✭✭✭
Options

Happy to help. 👍️

## Help Article Resources

Want to practice working with formulas directly in Smartsheet?

Check out the Formula Handbook template!