Complex sentence: The IUCN 1996 had declared the species vulnerable owing to the destruction of lowland forests and to hunting, but it was downlisted to least concern in 2008 even though it is still under the same threats as before.
Split into simpler sentences: The IUCN 1996 had declared the species vulnerable owing to destruction of lowland forests and hunting. It was downlisted to least concerns in 2008 but is still under the same threats as before.