That's not accurate. It would be absolutely impossible for the film to accrue an amount equivalent to a budget that high even if The Last were to somehow earn more than all of the previous Naruto films combined. Pierrot's net losses would be so astronomically large that they might even have to declare bankruptcy if that were true.
Edit: I believe a more accurate estimate for the film's budget would be something like 150-200% of what RtN's was, considering the increased production time and animation/artwork quality.
well...
not impossible,
I expected this