Probably best not to give it too much welly on only 700 miles! Oil windows can be very unreliable, need to let the oil drain down from the top of the engine before inspecting, get it very level etc...especially after a filter change. I would top it to the mark, run it for a few minutes, switch off and ensure its at the mark then check again after another hundred miles. It'll probably be OK - although some riders do report heavier oil use than others (at least on the old engine).
Probably they've measured a wrong amount (not taking into account the volume taken by the filter?)into the bike at the service, as mentioned.