The Ratio:PE value is (as per the little grey button in the ratio analysis sub item under the share's page) defined as the period end price vs the eps at that time. It is not tied to the current/prevailing price of the share.
The one (PE) is a current price divided by latest 12 months eps. This will tend to move around as price moves around day to day. The other (from the ratio analysis data set) is the price at period end (can be over a year ago) divided by the then eps. It won't move.