100% (Hangul: 백퍼센트) is a four-member (previously seven-member) South Korean… Read Full Bio ↴100% (Hangul: 백퍼센트) is a four-member (previously seven-member) South Korean boy group that debuted in September 2012 under T.O.P Media with their first single album We, 100%. The group consists of Rokhyun, Jonghwan, Chanyong and Hyukjin. Previous member Sanghoon went on indefinite hiatus in March 2014, Changbum left the group in September 2016, and leader Minwoo died on March 25, 2018 from cardiac arrest.

100% were first introduced to South Korea's TV audience in SBS MTV's variety show Teen Top Rising 100% (Korean: 틴탑의 뜬다 백퍼), in which they starred alongside fellow TOP Media artist Teen Top and their founder Andy Lee. The show aired ten episodes between June 16 and September 18, 2012.

Their debut single album We, 100% was released on September 18. It consists of three tracks and one instrumental version, which were all written and produced by Super Changddai. The same day, the music video for its lead track "나쁜놈" went online on the band's official YouTube channel. 100% made their official debut performance on September 21, 2012 on KBS Music Bank, followed by MBC Music Core and SBS Inkigayo that same weekend.