Labels

Three different things look like "the numbers on the chart." They are not the same key.

What you mean	What it is	Key
Legend / series names	Legend chrome	legend.visible / seriesLabels
Numbers on each segment	Data labels (off unless you turn them on)	annotations.dataLabels
Numbers on the bar / stack	Totals (on by default)	annotations.totals.visible

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Hide the numbers on the bars

{
  chartType: 'clusteredBar',
  isDataTransposed: true,
  seriesData: [/* … */],
  annotations: { totals: { visible: false } },
}

That is the control. Totals default on for clustered bar, stacked bar, mekko, bar mekko, and waterfall.

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Do not invent these

These keys do not hide totals. validateChartData accepts them (valid: true) and emits an unknown-key warning with suggestion: "annotations.totals.visible":

• annotations.showTotalLabels
• annotations.showTotals / showTotal
• annotations.dataLabels.showTotal
• top-level showTotalLabels or dataLabels

seriesLabels is series-name chrome, not bar totals.

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Data labels vs totals

annotations.dataLabels paints a number inside each segment. It is a per-series visibility array (or a boolean). Leave it alone unless you want in-bar labels.

annotations.totals paints one number on top of the category (clustered) or the stack (stacked / mekko / waterfall).

Format those numbers with annotations.totals.numberFormat and annotations.dataLabels.numberFormat. See Number formats.

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Related

• chartData schema
• Clustered bar
• Stacked bar
• Validation