As a general matter, most shows are budgeted to break even somewhere around 65-70% attendance capacity (though that number isn't exact due to the varying amount of discounting that many shows do). If a show is only doing a little better than break even on weekly basis for much of its run, it could run for years and never recoup (like the 42nd Street revival that never recouped despite running over 4 years). If what you say is right and Les Mis was usually around 75% for most of its run then, it would be highly unlikely for it to have recouped in the year that it has been running. These days, the only shows to have recouped in a year or less have been ones that were soldout 9Or close to it) nearly every week of its run. Heck, even Wicked took 14 months to recoup and it was totally selling out one of the biggest houses on Broadway for most of that period (plus selling thousands of premium seats at $300 a piece).
Like I said, I didn't base my statement on numbers but on having spoken to someone affiliated with the production who told me that it hadn't yet recouped and probably wouldn't. It still may, but any profit it makes would likely be negligible as it has been far from selling out in the past year and been doing fairly average (just above break even) business most weeks.
"What a story........ everything but the bloodhounds snappin' at her rear end." -- Birdie
[http://margochanning.broadwayworld.com/]
"The Devil Be Hittin' Me" -- Whitney