Over the seven day period while you watched your post value decline, the price of Steem and SBD declined, and this probably is the reason for almost all of the decline.
While the VP of those that voted your posts probably also varied over that time period, and this may affect your rewards, I suspect this is a small part of the decline in value.
The price of Steem declined probably almost exactly as much as your rewards. You should graph the price of Steem during the period you watch rewards fluctuate.
Exactly....now that we are at about $1 price of Steem....we may actually see an increase in reward value as the week goes on.
That sounds nice.!:)) I will still go on with the mini research and definitely include steem price comparisons for both weeks.
I've also heard people speak about a reward pool. If it is constantly being reduced as well that might have something to do with the falling rewards.
Rewards are calculated to drain the pool of newly created Steem each day, lagging 7 days. Just after HF19 there was an accumulation of Steem beyond that, due to whales participating in an experiment and not voting. We have drained that excess, and Steem being produced each day is being consumed each day, if I understand correctly (I could well be wrong, as these are but recollections of passing mentions, rather than study).
This smaller rewards pool, consisting only of what Steem is mined each day, also contributes to lower rewards, but the impact is nowhere near as great as the decline in the price of Steem.
Thank you! I will look into current week steem price chart to compare.