This may have been suggested before. It would be great if it was possible to format the way data displays in a data table. For example round numbers from a SharePoint list display with a decimal point and a host of trailing zeros. Also, date format appears fixed to US style.
Apologies if this is merely exposes my inability to work with PowerApps.
Marking this request as completed with the experimental release announced in https://powerapps.microsoft.com/en-us/blog/improved-data-table-control-with-column-formulas/. Please reach out with feedback on this improved control behavior.