Thanks for that explanation! It really clarified it.
What about this previous transaction:
I don't think it's clear to you yet, if you ask about change again.
Think of it this way: you pay someone with a 10 dollar bill, and you get 4 dollar back. Bitcoin's change is more or less similar to change in cash payments.
Oh, sorry I didn't realize this was change as well. I did get it the first time, I just didn't realize this was also change.
The wallet that you are spending from has more amounts of bitcoin than what you are sending and the difference is returned to your other address as change minus the miner fees.