Earlier quoted context omitted.
Technically, it does not, raising 0.25% is always in relation to the existing value of the thing, so increasing a percentage by a quarter of a percent would mean increasing it by a quarter of a percent of its existing value. On the other hand, "basis percentage points" means something absolute, not relative to the existing level. Pedant out. :)
The claim wasn't that "raising by 25 bps" should be interpreted the same as "raising by .25%", it was: > 25 bps means 0.25%. In a sense, that is technically correct: it does refer to .25% -- not of the current value but of the 100% value.
Interest rates are being raised by .25% per year.