(Airbus FBW)
Developed when flying across the Atlantic; I got into the habit when PF, of writing the current pitch and N1 onto the MCDU scratchpad every 30 mins or so during the cruise.
Usually it is 2.5 degrees up, but varied from 74% to 83% N1 depending on variant (320/321/330) and weight.
(Obviously we did not fly A320/321 across the Atlantic !)