To cancel an approval that has started and has not been approved, terminate a workflow, locate the draft report from drop down menu, click Approval Request and and click on the Cancel Request button in the top right corner.

The user will be prompted to confirm the cancelation before proceeding.  Once confirmed, the report will be located under the Draft Tab in a Cancelled status.  To restart a new approval request, click Approval Request from the menu and click New Approval Request in the following screen:

Click " Start Approval" to start the process again.