market value percent within account

You can create your own views in the portfolio by customizing which accounts are included.

The standard default ones include all accounts.








As you can see from the dropdown list, I have made some of my own for single accounts such as "Reg IRA".

[added]
Just reread your question, no, you have to make separate views.

Ellary Kahan said:

I know that. I wanted to avoid making separate views for each account.

If you want to have one 'view' or report with multiple accounts and the market value% of each security within each account, the answer is no.  

The closest you can come is set up the one view, then
Customize to Account 1, review, print, evaluate, etc.;
Customize to Account 2, repeat ... 

Or set up a report, then export the report to Excel and perform the unique calculations there.  

[edited to remove overlapping ideas]

I don't see a way to get these percentages for all your accounts at the same time. If you really want  to see them all at once, you can export the data to Excel and manipulate it there. In an Investing/Portfolio view, select all your accounts, group by account then go to File/Print portfolio. Pick Export to: and select .PRN (123 compatible) format. Save the file with an extension of CSV and you should be able to open it directly in Excel and add the necessary formulas.