Build a Budget vs Actual Report in Google Sheets with Gemini
Google's help page for Gemini in Google Sheets says Gemini can create tables and formulas, generate data analysis and insights, build charts, and perform actions such as conditional formatting, pivot tables, filters and number formats, each shown on a preview card you apply or undo. It works best with native Google Sheets files, so Google says to save an Excel file as Google Sheets first. Inserted charts go on a new tab with their data and do not change when the original data changes, and the conversation history is lost when you reload or reopen the file. The feature requires an eligible Google Workspace or Google AI plan.
Google Sheets, Google Gemini
Google Docs Editors Help (Collaborate with Gemini in Google Sheets)