Row level security control by page

Repost: Since I think my previous post may confuse

Question: Is it possible to set row level security control by page?

Here is example

<User Table>

<Sales Table>

There are 2 pages  "Country" and "Region"

• When user goes to "Country" page, total number of sales, $600, is shown with the following table.
  

  Region	Sales
  East	$100
  West	$200
  Central	$300
  Total	$600

• When user goes to "Region" page, only regional data is shown. For instance, if user A access to the page, $100 is shown.
  

  Region	Sales
  East	$100

I would appreciate for your support