How does the source not make it clear? The first two bullets from your source.
“Apple generated $390.8 billion revenue in 2024, 51% came from iPhone sales
Apple Services is the second largest division, responsible for 24% of revenue in 2024”
“Apple generated $390.8 billion revenue in 2024, 51% came from iPhone sales
Apple Services is the second largest division, responsible for 24% of revenue in 2024”
Back to iPhones, this [2] page shows their stats by units sold (about half way down). iPhone is essentially treading water if those data are correct (with a peak in 2015 overcome twice since, but by ~1% each time), but I strongly suspect that that's showing units shipped and not units sold, as iPhone sales declining has been universally reported.