Quick question - tires/sprockets

[Live2Ride300]

Right now I have the stock tires on my 300. Soon im going to be gettin a set of razrs front and rear. The stock rear tire on a 300 is 22inchs tall and im gonna get 20inch razrs for it. Ive heard that going from 22inches to 20inchs is a 10% ratio change. I have a 13t front sprocket on now, which is the stock number of teeth. Ive heard that going to a 14t front sprocket is 6% or 7% ratio change. If this is all true, what can I do to make up for the rest of the ratio change, so i wont be loosing any bottom end or top end power? Would I have to go down a tooth or two on the rear sprocket? Thanx for help guys

[Sick0]

I wouldn't worry about 4%, you won't even notice it. But If you want to fix you have knock it down 1t in the back.

[Live2Ride300]

Ok, so going down one tooth in the back is around 4% or something like that? Your probably right, its probably not that noticable. One time my friend and I switched tires, he has a 400. And you could deffinatly tell the difference, i had stock gearing, and you could tell it lost some top end.