Markit Economics released its final manufacturing purchasing managers' index (PMI) for Greece on Tuesday. Greece's manufacturing purchasing managers' index (PMI) jumped to 39.1 in August from 30.2 in July.
The decline was driven by falls in new orders and production.
Employment declined for fifth successive month.
"Overall, the headline PMI reading paints a disconcerting picture of the health of the Greek economy, as uncertainty builds around the nation's future political and financial position," Markit economist Samuel Agass said.