Need help in clarifying details about pop upkeep

[Деорг]

Specifically, i want to how "pop upkeep" modifier interact with similar modifiers? As far as i understand, each pop in biological empire need four things: food, housing, consumer goods (corresponding with its living standart) and amenities. So, am i right assuming that they just stack with each other?
I mean there are modifiers that affect amenities, consumer goods, housing and there is one that affects "pop upkeep" - does it implies that it affects all four? So, for example, if i achieve -30% pop upkeep (anyhow) and then, for example, -60% amenities upkeep - will i achieve cap of -90% reduction of amenities usage?

Unfortunately, i rarely have the opportunity to test such details, so i will be grateful for help, thanks in advance.

[HappySack]

No, pop upkeep just refers to the food and consumer goods upkeep the pop uses (assuming normal pops) and is not a separate thing.

Using your example: pops would have -30% upkeep (from food and consumer goods) and -60% amenities usage.

I should also mention job upkeep and housing, which can also be reduced from various modifiers and should be self-explanatory.

[Деорг]

Originally posted by HappySack:

No, pop upkeep just refers to the food and consumer goods upkeep the pop uses (assuming normal pops) and is not a separate thing.

Using your example: pops would have -30 upkeep (from food and consumer goods) and -60% amenities usage.

Food and CG? Interesting, why specifically these two, hm... Food is not so important in this case, but CG - before that i was stuck at -60% upkeep reduction by the late game (if i was lucky with Galactic Community resolutions, otherwise - just -45%). Now i can achieve cap, at least theoretically and barely, but it is achievable even without cybernetics.
Anyway - thank you again! Have a nice day.

[Деорг]

Originally posted by HappySack:

I should also mention job upkeep and housing, which can also be reduced from various modifiers and should be self-explanatory.

Yes, i know that. In some cases with right planet designation and planetary ascension you can acieve ~-95% (thats with Harmony tradition and Ascentionist civic) metallurgist upkeep, ~-105% with spiritual federation (in reality both cases, of course, capped at -90% (curse you, Montu, if i remember culprit correctly)).
Housing is a bit more problematic, but i vaguely remember that this question is solvable too, i just dont have numbers on hand right now.

Thanks!