LOL... think of it as a pizza pie.. you get 75% of the pizza and the up voters get 25%. Now on your 75% of the pizza 50% is pepperoni and 25% is cheese (75%). the pepperoni is the actual SBD or Steem Dollars that is considered liquid cash in the end. the cheese part is dedicated to your steem power.. which the higher the steem power the more SBD you give someone when you upvote. the 25% of the pizza that is not yours which is also cheese gets split among people who upvoted your post. Its best to use 50/50 for most of the time but every so often do a 100% power up. It will tell people you care..
Its ok about being out of voting power... ask @manuel78 how he delegates his power out because you don't have to give someone 100% power.. you can give them 50% and it wont deplete your voting power as quickly
That is when you are higher up on the food chain. Us minnows give 100% :)