This option lets you revert to the previous state and undo the recent changes made to the excel sheet. There are two ways to executing this:
Undo option lets you erase of cancel upto last 100 changes that you have made in the Excel Sheet. All you have to do is click Undo that multiple times. There is an arrow on the right side of this option ash shown above which can be clicked to see the actions that you performed included an option to cancel all changes.
There is another option similar to Undo, Redo which lets you reverse the action of the Undo in the Microsoft Excel Sheet. You can redo the changes in following two ways: