Approximately what percentage of a day do the "tree kangaroos" spend in trees?

Species vary, but most of them spend around half their time sleeping in trees, and as much as possible of the rest traveling from tree to tree. They do descend to the ground from time to time to forage for food, but make sure they stay near a handy tree in case of danger. They move very awkwardly on the ground, and do not feel safe there - but they are nimble and graceful moving around trees.

https://taronga.org.au/animals/tree-kangaroo
https://www.zoo.org/tkcp/tkcpfacts
https://animalia.bio/goodfellows-tree-kangaroo