The independence activists of West Papua presented the UN with an underground petition signed by 70% of the population of West Papua.

I can't tell from the article whether "West Papua" refers to the entire Indonesian-controlled half of New Guinea (that's how independence activists use the name) or only to one of its two provinces (as the Indonesian state uses the name). For clarity let's call it Western New Guinea.

Indonesia conquered Western New Guinea shortly after the Dutch let go of it. This was a bare-faced act of colonization. New Guinea has no cultural, historic or linguistic link with Indonesia.

Since then, Indonesia sent around a million Javanese colonists to settle in Western New Guinea. 70% of the population could be the fraction that are not colonists.