Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Robert Kelly is managing director of XTS Energy LLC, ...

Unlike SUM, which ignores filters, SUBTOTAL dynamically adjusts to display only visible data. It offers 11 built-in functions, with additional options (101-111) that account for hidden rows. When ...