You have the option of aborting a backup when it is in progress. You can abort the backup either from the Status Section in the List Jobs page or from the backup progress window.
Select the x mark in the Abort section to abort your backup schedule. From the Abort pop-up window, click Yes.
Once you click Yes, the backup will be aborted successfully.
You can abort your backup if not required, from the Abort (-) option available in the progress window. You will get a pop-up window as shown below. Click OK to Abort your backup.
Once done aborting the backup job, Backup has been aborted successfully message will pop-up.