I had to look up the speech to check if this was an accurate representation or whether that ellipsis was doing a lot of work, and while it's not verbatim, it's very much close enough:

In the 2021 census, more than half of Australian residents, 51.5% were born overseas or had one parent born overseas.

51.5%.

Is that what supported by the Australian electorate? Is that what Australia wants?

Link to speech at 8m29s: https://youtu.be/mMHm9EzrobY?t=509