Percentage Calculator

Popular

Calculate percent of values, percent changes, and ratio proportions instantly

Percentage Mode

Percentage (X%)

Of Total (Y)

Calculation Result

Calculated Answer

20% of 250 = 50

First Value (X)

Second Value (Y)

250

Expression

20% of 250 = 50

Select your query type: 'What is X% of Y?', 'X is what % of Y?', or 'Percentage change from X to Y'.

Input the values.

View instant results and exact step-by-step math.

Core Percentage Formulas

P% of X = (P × X) / 100; Change% = ((New - Old) / Old) × 100

Essential for calculating discounts, price hikes, exam marks, and tax changes.

Old Value = 400, New Value = 500.

• Difference = 500 - 400 = 100

• Percentage Change = (100 / 400) × 100 = 25%

The price increased by 25%.

Subtract the original value from the new value, divide by the original value, and multiply by 100.

Add, subtract, multiply, divide fractions and convert to mixed numbers and decimals

Simplify ratios, solve proportions for missing values, and split totals

Calculate mean, median, mode, range, variance, and standard deviation for datasets