There are two factors at work there, both having an effect. One is the slider bar, where the user chooses how much of a full vote to apply. Vote power is what is reduced when voting, which regenerates over time (at a rate of 40 f100% votes worth per 24 hours.) Vote power reduces how much of a 'full vote' applies from the Steem Power they hold.
So say for example, my vote give $2 and I vote for your post at 25% with my slider bar, while my vote power % is at 50%.
---My vote power first brings my Full Vote down to giving $1. Since I used the slide to give 25% of a vote...it would then give you $0.25.
The slider bar is the 'benefactor' deciding how much of a 'full vote' you get, the vote power % is solely based on how much they've been voting recently.
Did that answer your question?
It is crystal clear to be now. I'm just exploring each aspect of Steemit bit by bit. @sykochica many thanks and very much appreciated.
Happy to help out. Feel free to ask anything as questions come to mind. :)
Maybe you can write a post on comment and resteem. I will ask you questions there since my questions are not in line with this post. I will be looking out for your post ;-)
I've got a handful of 'guide' / 'q and a' posts lined up over this week covering various topics...but I'm down to try a resteem. :)