You reached Elite on 1st Dec, not sure how much further you got, so lets assume 0% which is 440M. Assuming a 7x rank change you would need 455M to get Taxonomist and 880M for Ecologist. If you are already over 455M you won't see a demotion and then percentage progress until you hit 880M.
Elite would be 4.6B, so you'd need another 4.2B to grind out to get you back where you were before 14.01 dropped.
If, and this is the big if right now, they are calculating the pre and post upgrade 14 gains differently then your Elite rank won't have dropped to 0%. Mine has as I gained 3 ranks since upgrade 14 so that is fair enough. Knowing if your rank progress was zero'd would be really useful. My point here is that you gained 435M in old money, and just need 5M more to level (or 35M in new money). If you don't level to Elite after doing another 35M then we can safely say they didn't respect the values of old grind and everything got a demotion (be that 7x, 15x, 30x, whatever figure we finally figure out it is). If that is the case, then people who worked really hard pre-upgrade 14 have been royally done over.