50% if you consider the other versions in the Top 200 (est. 3% for BL at #112, 2% for BL at #151 and Roar at #185.) We're still predicting BL at 200K this week right? Another 400K week for Perry?
Miley needs to be done with "We Can't Stop" it's had it's run and caused some controversy but promoting the song anymore will only do more damage to her brand and career, "Wrecking Ball" is receiving amazing reviews and the public loves it, this is her only hope.