
The drop comes after a surprise 3.3% rebound in July despite the yearlong battle with Washington and weakening global demand.
But economists cited by Bloomberg had forecast a 2.2% rise ahead of the release of Sunday’s figures by the customs administration.
China’s trade surplus also dropped sharply in August to US$34.83 billion, from US$44.58 billion the previous month, while imports continued a four-month decline at 5.6% on-year, matching the July figure.
Washington imposed new tariffs on Sept 1 as it stepped up its high-pressure campaign to coerce Beijing into a new trade deal.
The additional levies come on top of the 25% tariffs on US$250 billion in imports already in place.
China said Thursday that new talks with the US would be held in Washington in early October.
In a sign of continued pressure on the Chinese economy, Beijing’s central bank announced Friday it would cut deposit reserve requirements for banks.
The measure would allow an estimated US$126 billion in additional loans to businesses facing an economic slowdown.
China’s GDP growth was 6.2% on-year in the second quarter, the lowest rate in nearly three decades.