As Facebook tries to win back young users from competitors around the world, a new report indicates that Chinese netizens' interest in social media has waned.

The report, released by the China Internet Network Information Center, showed that the number of Chinese social network users declined to 257 million by the end of June. Social network websites in China have lost 20.4 million users in the past six months.

The percentage of Chinese netizens visiting social websites dropped 4.3 percentage points compared with December.