President Lee Jae Myung speaks during a press conference marking his 100th day in office held at the former presidential compound of Cheong Wa Dae on Thursday. (Yonhap)
President Lee Jae Myung speaks during a press conference marking his 100th day in office held at the former presidential compound of Cheong Wa Dae on Thursday. (Yonhap)

President Lee Jae Myung's approval rating fell below 60 percent, a poll showed Friday, as he marked 100 days in office.

In a Gallup Korea survey of 1,002 adults conducted Tuesday through Thursday, 58 percent gave a positive evaluation of Lee's performance, down 5 percentage points from the previous week.

Lee's approval rating had stayed above 60 percent following his summit with US President Donald Trump in late August, but the upward trend reversed this week while he marked his 100th day in office on Thursday.

Among respondents, 14 percent who gave a positive evaluation cited the economy, while 22 percent of those with a negative view pointed to diplomacy, particularly after more than 300 South Korean workers were rounded up in a U.S. immigration raid at a battery factory construction site in Georgia.

The ruling Democratic Party's approval rating rose 1 percentage point to 41 percent, while the main opposition People Power Party remained unchanged at 24 percent.

The survey had a margin of error of plus or minus 3.1 percentage points at a 95 percent confidence level. (Yonhap)