Galactic Civilizations IV: Supernova Galactic Civilizations IV: Supernova Galactic Civilizations IV

Understanding Pollution Levels

Published on Sunday, February 27, 2022 By PaulLach In Galactic Civilizations IV

I have been playing around with Pollution and I am having a hard time understanding the math.  Can someone please explain how the math works?  I have included a screen snapshot below for one of my planets showing the detailed information for Pollution.  I would guess that you would sum the percentages below the Base Pollution line, then apply that percentage to the Base Pollution number, but that would yield a net Pollution number of 6.16% ((1.0 - .5 + .16 + .1 - .2) * 11).  If I apply the increases first, then apply the decreases I get 4.158% (((1.0 + .16 + .1) * 11) * (1.0 - .5 - .2)).  If I apply the decreases first, then apply the increases I also get 4.148% (due to the associative property of multiplication).

Where am I going wrong?