per day per a single faction, not per pilot, the game doesn't calculate inf that way....eg - 100 pilots @ 1% ea= disaster...can't happen
If you have zero opposition, then depending on population and then of course other factors, 1 pilot can easily do 1% to 20% in one day..
I say it that way because first the smaller the pop the easier it will be to make them grow, as long as the other factors aren't missing or are all messed up.
ex: pop:1700 system has lots of planets but only 1 outpost and only 2 or 3 factions, no extraction sites, normal nav beacon and none of the factions are present in another system.
Then this is going to be hard work, easy to grow because they are tiny, but with difficulty getting bounties and with only 2 or 3 factions...tough to do business.
In this case you are going to be stuck at small % daily until you can manage to expand hopefully into systems that have better resources.
just 1 of many possible scenarios.
most places that don't already have cmdr's doing business there already will pretty much have the buckets all on empty, except maybe the bad buckets...as they may be close to starving or close to unrest or outbreak....
the point there is that you often have to waste a day filling buckets, so that on the 2nd day it actually starts to change..
ex: adding 500k bounty vouchers daily to such a place will likely only do 1 to 5% daily for the first day or 2, so if you know this might happen, be prepared, drop a few mil in carto data, that will kickstart and give lots % next day, same with bounty, give 2-5 mil,
once it starts, then it keeps moving with less effort. as in a system this size, if all the buckets are GTG, then 1 lousy mission a day can get you 1 to 5% easily.
if that pop were 6bil instead, then instead of 1 to 10% for above effort, you might only get 1-2%
And for every person doing plus things, if there is an equal number of cmdrs opposing you or even 1 cmdr doing the effort of 10 cmdrs......obviously..change will be minimal if at all or even the exact opposite of what you expected.