
Originally Posted by
Back In Black
It's difficult to do an exact calculation because of the potential loss/gain of LBM.
So we will assume that your LBM will remain static in the following.
Lets say you are 160lbs @ 22% bf. that's a total of 35lbs of fat. You want to be 15% so you need to lose just over a quarter of that total, approximately 11lbs or so.
You can fairly easily do a calculation along the lines of
Total body weigh x % of bf you wish to lose
In your case
160lbs x .07 = 11.2
Sorry, I have trouble committing calculations to paper, I do them all in my head, but the above is the short way and as accurate as any other.