Display exact proportions on every slice so your audience can read the data at a glance.
Input the actual numeric values for each category — for example, the number of survey responses. You do not need to calculate percentages yourself; the chart tool will convert raw values to percentages automatically.
Look for a label or display option in the chart settings and toggle percentage display on. This adds a percentage figure to each slice, calculated from the total of all values.
Decide whether percentages should appear inside each slice, outside with leader lines, or in a legend. Inside labels work best when slices are large enough; outside labels keep small slices readable.
Set the number of decimal places — one decimal is usually sufficient (e.g., 23.1%). For clean visuals, round to whole numbers when the audience does not need high precision.
After formatting, confirm that the displayed percentages add up to 100% (or very close due to rounding). If the total is off, adjust rounding rules or use one more decimal place.
Practice what you learned with our interactive pie chart editor below. The chart is pre-filled with sample data to get you started.