I'm posting this today in advance of publishing Willingdon on Ravelry since I want to create a link in the pattern as a reference. These are my working charts used to crunch the numbers for Willingdon's five sizes. They're meant to be a reference guide for any knitter wanting a quick and easy way to check their stitch counts as the yoke is decreased. Please pay attention to the numbers for the Fronts. You will want to focus on the final column, "actual # sts with selvedge".
Hope this is helpful!