How it works: This calculator helps you perform various percentage calculations including finding a percentage of a number, determining what percentage one number is of another, calculating percentage change between two values, and applying percentage increases or decreases to a value.

Percentage Formulas:

• X% of Y: (X ÷ 100) × Y
• X is what % of Y: (X ÷ Y) × 100
• Percentage Change: ((New - Original) ÷ Original) × 100
• Increase/Decrease: Original × (1 + Percent/100)

Tip: Percentage change can be negative (decrease) or positive (increase).

Use Cases: This calculator is useful for calculating discounts, tax, interest rates, grade percentages, financial analysis, and any scenario involving percentage-based calculations.

Whether you're a student, professional, or just need quick percentage calculations, this tool simplifies the process for you.