Depends how you draw the boundaries of the Peaks.
The yellow highlight is the 777 acre permit area Snowbowl operates within.
The blue highlight shows the Kachina Peaks Wilderness area. The permit area is about 4% the size of the 18,960 acre wilderness area.
If the white highlight area is considered The Peaks that would make the 777 acre Snowbowl permit area 1% of the Peaks.
Snowbowl.kmz