Newhuman

IFRS requires reporting the net pension asset or liablity after removing the unrecognized gains/losses from the funded status to the extent not yet amortized.

I suppose the correct way would be

-85 because underfunded
-12 (gain would have originally reduced our liability in funded status but since it is not amortized would remove the effect)
+27(loss would have increased our PBO but it's added back for the same reason that it's not amortized)
= -70 (hence underfunded)