TBF, I think it's more like "40% of the new total" relative to that new amount; the PC segment is still "growing" in that regard as the market itself is growing in revenue, but the PC's share of the increased revenue is lower than its share of the market when it was smaller. If that makes any sense.
SIE's GAAS/traditional budget funding slides from IIRC the FY '22 report were similar. Basically, percentages don't mean much unless the total amount of money is either increasing, decreasing, or stagnating and you know what the percentages are associated with.
Even so, yeah, it definitely dispels the notion that PC gaming is bigger than console gaming, even in terms of revenue (let alone B2P sales, for AAA or even AA games). I'd argue the main reason PC revenue stays competitive is because of a near-endless pool of legacy titles that might do crap numbers on their own, but combined give some decent totals missing on respective consoles.
And the other reason, would be the PC-exclusive GAAS titles like Counterstrike 2 (Valve), DOTA 2 (Valve), League of Legends, VALORANT, World of Warcraft etc. generating nice amounts of money on their own