Is there guide for syntax for use in Dynamic Values within a Text Box?

Hello everyone - hope you are well.

I've been playing around with the Dynamic Values option within Text Boxes. Recognising that it's based on sentences rather than strict coding rules, is there a guide available about how the AI would interpret different sentences?

An example of the sort of thing I'm looking for is the % of the total in a pie chart showing a split by gender for the biggest gender category.

I've used the following based on copying the structure in a similar return in a Smart Narrative visual, but it gives me a return of female rather than a %??

Count of Client Number for Gender with the highest total of Count of Client Number as a % of total.

If there is an easy to find guide out there that I've just plain missed, apologies in advance 🙂