To export a field with a custom number format like '>24' to Excel while maintaining the desired formatting, you need to apply a custom number format to the field in Qlik Sense before exporting. Here are the steps:
In the Qlik Sense app, locate the table or chart containing the field you want to export.
Right-click on the field and select "Number Formatting".
Change the "Number Formatting" option from "Auto" to "Custom".
Enter the desired number format pattern in the "Pattern" field, e.g. '>24'.
Click "Done" to apply the custom number format.
After applying the custom number format, when you export the data to Excel, the field should maintain the specified '>24' format.