Percentage Lab

Out of 100 · calculate · compare · apply

Visual experiment

Mission: connect 35% to 35 highlighted cells out of 100.

Percentage35%

Whole quantity80

Known part24

35% = 35 / 100 = 0.35

Speed1.00×

28calculated result

35 / 100rate per hundred

0.35decimal multiplier

Nonefocused object

Tap the grid, meter, quantity, result or price tag for a short explanation.

Touch pen, colors, percent-grid and formula stamps, geometric shapes, text and image import.

Language

Narrator

Narration speed

Step 1 / 100%

Embedded recordable audio ready. No microphone is used.

Narration plays as boosted tab audio, so an external tab or screen recording can capture it. No built-in recorder is included.

Part = percentage ÷ 100 × whole

Percentage = part ÷ whole × 100

Whole = part ÷ (percentage ÷ 100)

Final price after discount = original price − discount amount

35% means 35 out of 100, not 35 out of any whole without scaling.
A 20% decrease followed by a 20% increase does not return to the original value.
The percentage, part and whole have different roles in each formula.

Discounts, tax, tips, exam scores, survey results, interest, nutrition labels and data comparisons all use percentages.

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