The monthly changes are seasonally adjusted. They follow August growth revised to 0.4% in both areas, as noted in Alliance News reporting published by AJ Bell.
The annual trend remains positive: the calendar-adjusted index rose 0.4% in the euro area and 0.9% in the EU compared with September 2025.
These figures measure volumes sold, rather than turnover in current euros. The monthly fall and annual increase describe different comparisons; the initial estimates remain subject to revision.