I am an IT Auditor and made a mistake on a report that I issued that doesn't change the sensitivity of the finding.

I am an IT Auditor and made a mistake on a report that I issued that doesn't change the sensitivity of the finding. I went through several review and edit iterations with my manager, mapping all workpaper exceptions to the report, including reviewing my artifacts, and somehow I missed one bullet point.

I indicated that there were almost 1000 user profiles in error and there were actually 500. I think that a filter that I removed on Excel was the culprit that I missed.

I'm extremely thorough with my work and pride myself with being very detailed oriented. My manager has berated me even for additional semi colons that went out on a draft. I did mention to him what happened when I found out, stating that the real number was smaller but didn't specify how much since it was after 5pm on Friday. He told me not to worry and that we'd talk once we're back from the holiday break.

I want to fix this wrong but I'm also terrified of another lecture or more berating. Since it's not going to change the outcome of the finding, am I supposed to sent a redacted report or just document to the file?