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Check the dates. Planck data is from 2015 and we learned from there that the amount of dark matter is slightly different from what we thought before Planck. I maintain my numbers :)

It maybe because of the new universe created by dark energy that's why dark matter has grown even more :)
Well as of now we dont exactly know the amount of dark matter maybe the amount has increase again maybe not. We dont know haha

I am answering here because of the nesting limit.

If you assume the presence of dark matter in the universe, then you know its amount exactly. Cosmology allows you to make the calculations. You can fit the parameters of the cosmological model according to the latest data, and you get 26.8%.

This may change in the light of new data of course, as there are uncertainties. But give or take it will not be very different from this number (otherwise new data may contradict old data).