Restore a Previous Version of a Document in OneDrive

You can view or restore previous versions of documents in OneDrive for Business.

Navigate to OneDrive from Office.com.
Right-click the document that you want to restore to an earlier version, and then click Version History.
The Version History will appear in the details pane on the right side of the screen. Select the ellipses (...) next to the version of the document you want to restore and then select Restore.
In the confirmation message, select OK. The document version you selected becomes the current version. The previous current version becomes the previous version in the list.