I am not fortunate enough to have a scale that measures in grams and I can't bring myself to toss my old one "it still works".  I was nosing aroung the web and ran across this site. For any of you who are looking for something like this, it works really well.  And the best part, it explains in a way that even I can unbderstand.  If this has been posted before, I apologize.

 www.artisanbakers.com/percentage.html

Carol