Plot.plot({
y: {
grid: true,
percent: true
},
marks: [
Plot.barY(penguins, Plot.groupX({y: "proportion"}, {x: "species", fill: "sex"})),
Plot.textY(penguins, Plot.stackY(Plot.groupX({y: "proportion", text: "proportion"}, {x: "species", z: "sex"}))),
Plot.ruleY([0])
]
})