The issue of calcium and phosphorous (quantities and ratio) has cropped up a few times on the forum, mainly in respect of puppy growth and development. In order to help people who are searching for this information, here are the threads which already exist and contain advice about the subject:
Puppy food (2-3 months)
Best food for giant breed puppy
Other links:
Dog feeding guidelines
Dog Food Advisor
Please contact the manufacturer of your chosen pet food for more detailed information.