Headley was out of four shows last week, so that might be the cause of such a big drop. I have to wonder who the producers are looking at to replace Headley since it seems she's extended possibly until the end of September. I hope the show keeps going through the end of the year at least & that Erivo has extended until then. It's weekly nut can't be that high. Small set, small cast, small orchestra. I doubt their weekly nut is more than $550K a week depending on the three leads' salaries.
A Chorus Line revival played its final Broadway performance on August 17, 2008. The tour played its final performance on August 21, 2011. A new non-equity tour started in October 2012 played its final performance on March 23, 2013. Another non-equity tour launched on January 20, 2018. The tour ended its US run in Kansas City and then toured throughout Japan August & September 2018.