Sorting/Alerts by Percentage of Floor Price Change

I primarily use Compass to track the assets in my own wallets. It helps me keep an eye on those collections and see if things are rising/falling. One sorting option I'd really like to see is the percent of the rise or fall of the floor price. The floor price is already sortable, and in the column for floor price it already shows the percentage. I would like to be able to sort by that percentage. It would help catch trends easier. It would also be nice to set a generic alert by this stat. Say I want an alert for any of my owns collections where the floor price rises by 50%. Then I'd get an alert, keep an eye on that colleciton and see if it's worth listing something in the near future.