The distribution will change to approx 29%north 71%south, because your leaders are negotiating a BBF right now and this was agreed as far back as 1977,
Viewpoint
The 25-29% for TCs was discussed only in the context of a BBF of the nature that Makarios considered back in 1977, where the TC "area" would effectively be just a district or municipality (not a near-sovereign state as is discussed today) and where all GCs would return to their homes and be a majority even within the TC district (although not voting for the TC "local authorities" elections), with a GC president and TC vice-president.
If TCs want a greater degree of sovereignty then they will need to take a lower proportion of land. At the extreme of 2 equal, con-federal states (if GCs ever accepted this), the land ratio would of course need to be 82:18.
This a well-established and widely used concept in international politics called "land for sovereignty".
I agree with you that Christofias is currently discussing something that goes against the above. 30 years of GC leaders stupidly yielding more and more while Turks instead increasing their demands have resulted in discussions of effectively a confederation (per Annan) at the original land ratio.
What you need to realise however is that these incapable GC leaders have done all this behind the back of the GC people - throughout this time they have been promising that all refugees will go home and reclaim their properties, full human rights, 1 truly unified country etc.
As a referendum approval is needed, TCs will need to agree to either a true united federal country with full human rights, or if they insist on disguised, Annan-type partition, agree to a fair sharing of the land i.e. around 80:20 (which I believe is the only realistic way of getting both communities to say Yes at referendum).
It is in Turkish side's interest to realise the above as soon as possible. In the opposite case, GCs simply have no reason to agree to such a solution (as Page 1 of this thread shows clearly i.e. the benefits of the proposed change are all for the TCs). The status quo will continue until Turks realise this, with TCs remaining a pariah and Turkey firmly outside the EU.