But let’s proceed with correct math:

February 22, 2026

$But let’s proceed with correct math:$

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So B decreased by 238, but the number of more is negative — but since the question likely expects a positive number and may have ratio typo, but we must follow math.
But in the context of the format, perhaps the question meant the absolute increase in a different way.
Wait — perhaps shifts from 3:7 to 7:5 — 3:7 is A:B, 7:5 is A:B — so A increased from 3 to 7, B from 7 to 5 — so B decreased.
Difference = Modern B – Pre-industrial B = 350 – 588 = –238
But since the question asks how many more, and it’s less, the answer is that 238 fewer, but we must give the number as per calculation.
However, in the context of the sample problems, likely a ratio error in interpretation.

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