* sigh *
Here is a painfully obvious illustration ....
That post has one up-vote, and two down-votes, which as I explained above (post #5) displays on the voting widget beside the post as -1 (that is: +1 -1 -1 = -1)
Meanwhile, as I explained above (again, post #5) your log of reputation events shows each of these three events independently with the resultant effect on your reputation score. For the post you've drawn out, the log lists one up vote (+3 to your rep), one down vote (-3 to your rep) and one more down-vote (-3 to your rep). A total of three reputation events, for a total effect of -3 to your reputation. You also have events listed for a different post in that same topic, some of which occurred at a different time and therefore appear later in the log.
all add up. If you're still having trouble understanding or if you think there's some other problem I'm more than happy to investigate and to try to explain things for you -- and we'll definitely take any misunderstandings or suggestions into account for improving the system and creating or improving documentation -- but I'm not really appreciating the attitude you're appearing to give.
Does the explanation make sense to you now, or would you like a complete step-by-step walk-through of your entire
log of reputation events?