"100%" is a song by American rock band Sonic Youth from their seventh studio album Dirty (1992). It was released as the lead single from the album in July 1992, by DGC. Written by Sonic Youth, the song discusses the murder of Joe Cole, a friend of the band who was killed in an armed robbery on December 19, 1991.

Sonic Youth was an American rock band based in New York City and formed in 1981. Founding members Kim Gordon, Thurston Moore and Lee Ranaldo remained together for the entire history of the band, while Steve Shelley (drums) followed a series of short-term drummers in 1985, rounding out the core line-up. Jim O'Rourke was also a member of the band from 1999 to 2005, and Mark Ibold was a member from 2006 to 2011.