Excel to Power BI Conversion

I have an existing Excel workbook that already pulls everything it needs from local tables and sheets—no external connections are involved. What I now need is a like-for-like migration into Power BI. Every formula, measure, and calculated column that drives the current workbook must be reproduced so the results match exactly.

Once the data model is rebuilt, I want the key insights displayed in a clean Power BI report that includes bar charts, line graphs, and pie charts, just as the Excel version does. A categorical slicer should sit on the page so users can quickly filter the visuals by product group (or the equivalent category field already in the data).

Deliverable: a .pbix file that opens without errors, produces identical figures to the Excel source, and contains the requested visuals and category slicer, ready for me to publish to the Power BI Service.