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Users with the Site manager, Content editor, or Content author roles have access to compare and revert past revisions.
How to compare revisions
From the administration bar, select Workbench, and then select My Dashboard.
From the Content list section, select the page you wish to see past revisions of.
Select the Revisions tab at the top of the page. On this page you will see a list of all revisions, who completed the change(s), and at what time. revisions tab example
From the chart, select two revisions to compare.
Select Compare selected revisions to view the differences.
The differences between the two revisions chosen are shown on a single page.
Anything removed is highlighted in red.
Anything added or kept is highlighted in green.
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