Population Death from overcrowding is 0.04% per % over 100% cap.
Thus a 200% capacity planet is 100% over and thus has (0.04 * 100 = 4%) a 4% death rate. This maxes out at 400% capacity at 12%
Credit: Thomas Harley
In addition to deaths:
- excess population on overcrowded planets cannot work factories or mines
- the first 200% overpopulation (300% capacity) only produce half their normal production(for a net population production of 200%).
- Population over 300% produce nothing.
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