Converting Percent in one field to a Number in another field

I see formulas for similar functions but nothing for working with converting percentages "to number". I need to convert a field that shows 40% (or whatever that percentage is) to a separate field that will show as .4. One field shows the percent the agent gets in commission the other field shows the total applications they get credit for...So if he gets 40% credit he gets .4 of an app. I need a formula to convert [Primary Rep %] to the [Primary App] (formula-numeric field).