Then sanity returned, and they brought in the percentage gauges
Not necessarily. It depends on what the customer wants.
The Puma (S330) had percentages for the engines but the Super Puma had a choice of percent or RPM. The ones I flew had RPM for the engines. Full power; around 24,000 as a ball park figure.
The Goblin was 10,500/710 for 15 minutes and a little birdie tells me the Meteor was 14,750/680.