Rule for masculine · der
-ant/-ent → der · 0.9%, but many -ment exceptions
Many masculine nouns of Latin or French origin ending in -ant or -ent name a person or a concept: der Präsident, der Moment, der Cent. Unfortunately this pattern is less reliable than others - alongside the 21 masculine words there are also 13 neuter exceptions, so more than a third of words with this ending are actually das. Many recent English loanwords in -ment/-ent stay neuter: das Management, das Event, das Statement, das Engagement, das Talent, just like das Prozent, das Parlament, and das Restaurant. In practice, for older, Latin-rooted words (Präsident, Moment) you can bet on der, but for modern -ment/-ent loanwords you'd better double-check - the odds are close to 50-50.