An upvoted answer gives you 10 rep. A downvoted answer gives you -2.

It looks like that answer had one upvote and two downvotes - a net +6 rep. When you deleted it you lost that +6.

If you ever need to know how many up- and downvotes you have on a post, click on the post score, and it will split out the totals for you.

An upvoted answer gives you 10 rep. A downvoted answer gives you -2.

It looks like that answer had one upvote and two downvotes - a net +6 rep. When you deleted it you lost that +6.

One of the privileges you will hit at 1000 rep is the ability to see the vote counts on posts: If you ever need to know how many up- and downvotes you have on a post, click on the post score, and it will split out the totals for you.