Hi.
I need to show who has increased the most percentage sales but not sure how to do it as I'm quite new to using office.
Here's what I need to do:
The first column is the name, the second is the first week the third is the 2nd eek and the fourth would be the percentage amount so:


John 11,174 16,439 ???
Mark 9,032 10,343 ???
Dave 7,322 6,435 ???

Could some one help with this please?