It seems like your question is missing some key numerical values (percentages and quantities). To help you solve this problem, I'll need the following:

1. The percentage concentration of the initial saline solution (e.g., 5% saline solution).
2. The volume in cubic centimeters (cc) of this initial saline solution.
3. The desired percentage concentration of the final saline solution.
4. The volume of the final saline solution or how much additional saline solution should be added.

Once you provide these details, I can guide you through the calculation.