A versatile percentage utility that handles four distinct calculation modes in a single interface. Whether you need to apply a discount, measure growth, or find a portion of a value, this tool covers every common percentage operation without switching between different calculators.
Common Use Cases
- Calculate the sale price after a 30% discount
- Find how much a stock price has grown from $45 to $67
- Determine 15% of a restaurant bill for a tip
- Find the new salary after a 7% raise
Modes
| Mode | Description |
| Increase ↑ | Adds a percentage of the base value. Formula: result = base × (1 + p/100) |
| Decrease ↓ | Subtracts a percentage of the base value. Formula: result = base × (1 − p/100) |
| % of Value | Returns the portion of a number. Formula: result = (p/100) × base |
| % Change | Measures relative growth or decline. Formula: change = (to − from) / |from| × 100 |
How to Use
- Select a calculation mode using the chip buttons at the top.
- Enter the required numeric values in the input fields that appear.
- Click Calculate to display the result with a full equation breakdown.
Tips & Notes
Note: Negative values are supported in all modes for calculating losses or reductions.
Note: The % Change mode returns a negative value when “To” is less than “From”.
Note: Results are displayed with up to 8 significant digits to avoid rounding errors.
