Well that ratio is for those that have actually responded which is only around 50 according to the flight manager. I think the 7 day deadline to respond has been up for most by now. If they've only gotten about 50 responses to date then you probably have a good chance of going back if you accepted this round. I think it's also safe to assume that more than likely the people that respond are going to accept, the ones that are not probably threw their paper in the trash and let the 7 day limit expire.

Again I'm assuming you talked to him a day or two ago, not last week because that would change the actual number of responses.