You do not need panels just to display two views on the same page. Although you can certainly use them for that purpose (and you get the typical advantages of using panels, such as layout features, etc). It is very easy to achieve two views on the same page, just by using the 'attachment' display in views itself.
Here is how you go about it:
- Create a view as usual with display page. Set up as you want (Eg. using charts as its format).
- Add a second display to the same view, of the type 'attachment' and set it up as you want (Eg. using table as its format) ... Be careful not to override your first view!
- In Attachment setting chose attach to 'page'.
You can set other options such as to display the attachment before or after the view it is attached to and if contextual/exposed filters should be inherited.
Just remember that your page and your attachment can use different formats. Eg. one can be a table and another a chart (and you could also swap the formats as suggested in step 1 and 2 above).