Please see the attached picture for actual help.

Answers

  • Paul H
    Paul H Community Champion

    Add Month# text column enter 1 though 12, you can hide this column if you want.

    =SUMIFS([Sale Net Revenue]:[Sale Net Revenue], [Month#]:[Month#], <[Month#]@row, [Month#]:[Month#], >=([Month#]@row - 3))

Help Article Resources

Want to practice working with formulas directly in Smartsheet?

Check out the Formula Handbook template!