There are a number of paper calculator tools available on the web. These tools will show you the savings to the environment by switching to recycled paper. You can see how much wood, energy, greenhouse gases, water waste and sold waste are saved by making the change. 
http://www.neenahpaper.com/ECOPaperCalculator/index.asp?ft=Home
http://www.mohawkpaper.com/
http://www.edf.org/papercalculator/