No it isn’t. People seem to think the percentage is a linear measure of laserness somehow but it isn’t. It is some hidden mapping to power that changes. Most likely
min power + (max power - min power) * percent /100
and min power is what was changed and changed back because it messed up Proofgrade settings. If PG settings had been stored as wattage then changing the min power would not have affected them or anybody’s hand made settings.