But indeed it is 95% premine, in the short POW phase miners can generate 380,000 CG + 8,400,000 CG from the premine it is a total supply of 8,780,000 CG and 8,400,000 is the 95% of 8,780,000.

The only way to get the 5% from the ANN is to make the calculation against the MAX_MONEY variable, but MAX_MONEY is about the transaction limit not the total supply.