Percentage Calculators — 5 Flat Tools
No dropdowns. Five separate headings, each with a calculator and an example you can apply with one click.
1) A% of B
Example: 18% of 1250 →
Result
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2) A is what percent of B?
Example: 72 of 80 →
Result
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3) Increase B by A%
Example: Increase ₹2000 by 12% →
Result
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4) Decrease B by A%
Example: Decrease ₹800 by 20% →
Result
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5) Reverse: Original price before discount
Example: Final ₹800 after 20% off → original? →
Result
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Formula: original = final ÷ (1 − A/100). Note: Undefined at A = 100%.
How Percentage Works
A% of B => (A / 100) × B
A is what percent of B? => (A / B) × 100
Increase B by A% => B × (1 + A/100)
Decrease B by A% => B × (1 − A/100)
Reverse (before discount) => final ÷ (1 − A/100)