250 prosent (250 percent) is a live album by Norwegian alternative rock band Kaizers Orchestra.

Released exclusively on vinyl and as a digital download in October 2008, the release features recordings of ten songs (with one bonus track on digital versions purchased in the iTunes Store), recorded at various concerts held during the tour for the band's fourth album, Maskineri, which lasted from February to May 2008.

To tie in with Kaizers Orchestra's upcoming tour of Europe in October and November 2008, the band wanted to release a new recording.

Their original plan was to include recordings of the band's three favorite songs from each of their four albums, Ompa til du dør, Evig pint, Maestro and Maskineri.

The decision to release it as a vinyl was made by the band's frontman Janove Ottesen, who had recently grown fond of the aged medium.