Eurozone business activity declined for the first time in seven months in September, as France lost steam after the end of the Paris Olympic Games, a key survey said Monday.

S&P Global’s purchasing managers’ index (PMI) — a key gauge of the overall health of the economy — dropped to 48.9 in September, down from 51 in August.

Any reading below 50 indicated contraction.

“The eurozone is heading towards stagnation. After the Olympic effect had temporarily boosted France, the eurozone heavyweight economy, the Composite PMI fell in September to the largest…