You may select any 2 version to view in the comparison tool.
Open the file's version history (click here for more info), you can select 2 consecutive versions or 2 non-consecutive versions.
Compare 2 consecutive versions:
- Click on the icon of the version you would like to compare to its previous version
Compare 2 non-consecutive versions:
- Select the 2 version you want to compare, by checking their checkbox on the left side
- Click on the compare button at the bottom right side of the screen