Import all files & folders details in to Excel to keep track of file size, ... The data in the Excel sheet does not refresh, so we need to import the data regularly.

From within Excel 2007, click the "Open" button on the toolbar. Browse to the folder containing the ZIP file. Click the drop-down menu next to "Files of Type" and select "All Files(.)." ...

Excel files that include one or more pivot tables can consume more space since they save the source table data cache. ... Check the "Refresh data when opening the file" option.