Approx. $3,000,000
It did not do as well as the other Batman films as it was the first of the franchise so people did not know what to expect from it, as well as it was made for TV first so maybe people thought that it would just be an extended episode so they were not that bothered to see it.
Batman (1989)
$411,348,924
It did much better than the previous film because the Batman magazines/ graphic novels were blowing up in the eighties so there was more buzz for a Batman reboot as there were more fans of the franchise. Also people like the idea of a new perspective on Batman as a darker one meaning that it could tell a different story to ones before.
Batman Begins (2005)
$374,218,673
It did better than the first Batman because it was a high concept movie so people were bound to go and watch it. But it did not do as good as the first reboot as at the beginning people thought that it look to gritty for a Batman film and because Christopher Nolan was relatively unknown in the high concept world, many people thought he would not make it good enough for the fans. Furthermore, it could be because the Batman films before like Batman and Robin could have made an impact on the ticket sales as it was badly reviewed critically and publically.