Hi gburt
With ATUM, you have 2 possible ways to achieve that:
- By running daily scheduled exports with our Export PRO add-on and comparing data with Google Sheets or Excel
- By using our Action Logs add-on to record any change that happens in ATUM or WooCommerce, so you can know when the stock changed, who did it, etc.
But, just note that both add-ons will start working the day you active them and cannot get data from the past (when they weren't active).
I hope this helps.
Best Regards,
Salva.