You've Doubled Up Hand 1 -- ITM% Increases by ??

[Solitare]

Let's say you average 40% ITM for SnGs. You bust a fish and double up on the first hand of a SnG. You now have 1600 chips and the other 8 players have 800 (lets ignore the blinds).

How much has your ITM% gone up? Should you now expect your ITM % to increase from 40% to 50%? 60%? 70%?

I think the answer to this directly relates to recent threads on getting involved early in SnGs in hands that will either bust you or double you up.