Youre earning about 200% the first year. And yes, y ou will continue to earn interest on your steem power if you power down.
Lets say you have 104 steem power in your account right now.
you start a power down, and you get 1 steem for your first weekly payment.
By the time your power down is finished, you will be getting around 5-6 steem per week. YOull actually get your full 104 long before the payments stop. the rest is interest.
that is to say, that the 104 payments will still zero out your account, but youll realize interest because your payments will keep going up.
Awesome thanks for the information it definitely helps!