For some reason, people will sometimes flip the fraction when calculating decreasing percentages, so this roughly means that the old number of crossings is beyond one hundred percent greater than the current number of border crossings. It’s really dumb
It’s not the same, and you kinda answered your own question with that quote. Consider what happens when an object defines both dunder bool and dunder len. It’s possible for dunder len to return 0 while dunder bool returns True, in which case the falsy-ness of the instance would not depend at all on the value of len