Excel VBA Sales Analysis Automation

I need an Excel workbook enhanced with VBA that can pull sales data directly from our database, crunch the numbers automatically and present clear, on-demand reports. The focus is pure analysis and reporting—no manual copy-pasting, no repetitive filter steps—just hit a button and the figures are there.

Here is what I’m after:
• A reliable VBA routine that connects to the database, refreshes the data set, and stores it in well-structured worksheets.
• Automated calculations for common sales KPIs—revenue by product and region, period-over-period growth, averages, and any additional measures you suggest that add quick insight.
• Polished summary views (pivot tables or a lightweight dashboard) that update whenever the refresh runs, so management can snapshot performance instantly.
• Clean, fully commented code so I can tweak queries or formulas later without guesswork.

Your solution should stay entirely within Excel/VBA—no add-ins required—while handling typical record counts of 50k+ rows without slowing to a crawl. If we can keep refresh time under a minute, that’s perfect.

Once finished, I’ll test the workbook against our live database and review the calculations. When all KPIs match our existing manual reports, I’ll sign off.