Zdeňka Kolářová comments on Plant-based alternatives’ market share and taste-comparability: Mature enough to justify studying substitution patterns, price-responses, and welfare implications?

[Zdeňka Kolářová]

I was thinking maybe something like this − 1 extra bar with full scale and guiding lines capturing the proportion:
10 %
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↓ ↓
Group A: 0------------------------------------------------________________________________|
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Or even just a down-open horizontal curly bracket (“top curly bracket”) above the charts:

10 %
&#9182; <---HTML code of the top curly bracket symbol
Group A: 0------------------------------------------------________________________________|
Group B: 0--------------------------------------------------------________________________|