Today, I reported one of the spammers/scammers. He posted two duplicate threads, one of which has already been deleted, but all of his replies were promoting a scam tool. So I reported all of his posts in hopes they would be removed, or even that his account would get banned.
In the report section, we are expected to only notify the moderator on what we saw and not to bring a suggestion of what they should do, they know their job, so you suggesting that his account would get banned when he is not against the forum rule may be a bad idea on them, moreover, you may not have to consider all of his posts being bad, some may actually be bad and it may not have applied on all, this alone also could drop your accuracy on every post reported.
However, I noticed that the reports I submitted were rated as 'bad' and my accuracy dropped to 95%. Why did this happen?
Your accuracy does not mean you shouldn't report again or painted you bad, you stand to lose or enjoy anything from this, read between the lines of the message appearing on the report menu, that you shouldn't bother about your accuracy.