case that application of clause (ii)(II) for a year (beginning with 2025) would result in a conversion factor established under subsection (d) for such year, not taking into account any adjustment provided under such subsection, to vary by more than 2.5 percent compared to such factor so established for the preceding year (in this subclause referred to as the preceding year’s conversion factor ), the Secretary shall— (aa) if such application would result in a decrease in such conversion factor, modify any budget neutrality adjustment applied to such conversion factor pursuant to such clause such that such conversion factor is decreased by 2.5 percent, not taking into account any adjustment provided under such subsection, compared to the preceding year’s conversion factor