You are down to 39% for one years motoring.
First service should have a oil and oil filter change, and as its new oil, it should be at 100% ie, 100% of engine protection by the new oil. Percentage goes down with engine use as contaminates in the oil build up. 15% or less is the time oil should definitely be changed. Likely been an administrative error on data to the ford pass app, by not being updated for your car after the service.
Or, I do not think they missed it out, but.... you may never got the oil and filter change, just check the oil is relatively clean to prove it was done. I always put a sneaky scored mark with a screwdriver on my oil filter to know it has been changed (I never trust mechanics, saying work has been done, and it may have not been done >

).
Deterioration/dilution of oil has relatively been a new thing to worry about since EU6 diesel engines came in, where there is more burn cycles of the DPF filter than EU5 diesels, and causes contaminates in the oil. Many car owners like myself have packed in diesel engines and moved back to petrol engines, as there is less complexity compared to EU6 diesels. Petrol engines do not have such a dilution of oil problem.
Some cars are having big problems, like the Range Rover Evoque where the EU6 diesel engine requires new oil and filter every 6 months, or dash warnings of dilution of oil appear. The owners on their websites are angry at such a bad design of emission control causing such fast deterioration of oil.