The Indy leads on a poll from Labourhome website, claiming that 54% of Labour activists want someone other than Gordon Brown to lead the party into the next election. There's a lot wrong with this poll, of which you can read more here. The main problem is that if you add up the 46.2% of people who want Brown to stay on and the 53.8% who want him to go, it makes 100%. So don't knows have been excluded, either deliberately or by self-selection - not taking part in the survey.
So 54% of people who took part in an online survey and expressed an opinion wanted Brown to go.