About This Tool
What is Percentage Calculator?
A tool for performing common percentage calculations. Supports three modes: 'What percent is A of B', 'What is A% of B', and 'Percentage change from A to B'. Useful for discount rates, growth rates, and ratio calculations.
How to Use
- Select the calculation mode (ratio, value, or change rate).
- Enter the required values A and B.
- Click 'Calculate'.
- The result is displayed instantly.
Key Features
- Three percentage calculation modes
- Clean, intuitive interface
- Precise calculations to decimal points
- Instant result output
Tips
- Use the 'change rate' mode for calculating discount percentages.
- ROI calculations work well with the 'change rate' mode.
- Use the 'ratio' mode to find profit margins relative to cost.
Percentage Calculator
Perform common percentage calculations
Calculate A percent of B
Frequently Asked Questions
Как вычислить процент?▼
X% от Y = X × Y / 100. Например: 20% от 150 = 30.
Процент увеличения/уменьшения?▼
((Новое - Старое) / Старое) × 100. Положительное = рост, отрицательное = снижение.
Процентные пункты vs проценты?▼
С 10% до 15% = рост на 5 п.п., но 50% относительного роста.
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