Here for this one, I’ve asked for something similar, possibly less dev work to achieve than the full example above but anything would be good. Yours would be the ideal solution no doubt.
I asked for a dynamic formula field that we add to the front end.
Quick very basic example: Each time the user changed the filter fields the formula result would update.
Dynamic Date Filter - Dynamic Mortgage Type Filter
Statistic1 | Statistic2 | Statistic formula Result [=(Statistic1 - Statistic2)/Statistic1]
£1000 | £100 | 10%
I have so many ways to use this but again, this could be a lot of dev work, each stat box would need an id I guess to let the formula work 
I’ve also asked for an AI front end that would achieve much of the above I think. AI Assistant for reporting