Sales Data Inventory Tracker in Excel

I need an Excel spreadsheet for inventory tracking with a focus on sales data. The spreadsheet should automatically update stock levels as sales occur.

Key Requirements:
- Track inventory based on sales data
- Automatic stock updates in real-time

Ideal Skills and Experience:
- Proficient in Excel
- Experience with inventory tracking systems
- Knowledge of integrating sales data for automatic updates

Looking for a freelancer who can create a user-friendly and efficient inventory tracking tool.