Hi Andy,
Kindly have a look into the document hope it will be useful for you.
https://docs.mendix.com/howto/integration/importing-excel-documents
Hi,
In order to update the data of Excel predictive data to Mendix , you could do manually or dynamically.
Either you import the excel and update the data or using a schedule process run microflow and upload the excel using REST API or ODATA connector.
There is another way you could do, create an account with Tableau or Power BI and upload excel it creates a script use that javascript in the Mendix, whenever there is a change in data the Mendix application would change the report.
Tableaue and Power BI should have free version for students, if you have a student ID.
I hope this answers your question