When using the new face detection functionality in LR CC, "Named People" are represented in People view as a thumbnail, which, along with the name iyself, includes the total number of images associated with that person. However, once the number of images exceeds 100, the thumbnail display truncates the number so that the last digit isn't shown, e.g. 254 becomes 25... If you hover your cursor over the thumbnail then the full value (e.g. 254) is displayed.
This is on Windows 7. Looks like a definite bug to me.