Here's a link to a checklist with a power setting table for a Lyc IO-360.

http://www.dauntless-soft.com/PRODUC...son_n222bh.pdf

Down the bottom of the MAP/RPM combos it has this:-

************************************************** ************************************

Fuel Consumption Approximations
75% Best Power 11.5 GPH 65% Best Power 10.5 GPH
75% Best Economy 10.0 GPH 65% Best Economy 9.5 GPH
Best power = 50° C rich of peak EGT Best Economy = Peak EGT (or LOP)

************************************************** ************************************
The 75% "Best Power" and 75% "Best Economy" couldn't both be actually 75%,
could they?