In a pool when you mine a block you usually see the stats about it like for example its height, the difficulty you used to mine it, and so on.
I can understand all these things, but some pools also include a metric called effort, which is a percentage. This number can be anything, even higher than 100%, for example 1726%, or 6%.
What does this metric mean?
Iirc from the days I've been mining it's a wildly rough estimation based on the time needed by that pool to find the previous block or blocks.
A simplistic math would say that if that pool got previous block in 2h and now they're mining for 1h, then it's 50% of their estimated effort. If 3h have passed and still no block found, then it's 150%.
