Free percentage calculator to find what X% of Y is, calculate percentage increase or decrease, and solve percentage problems with step-by-step solutions.
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Whether you're calculating discounts while shopping, figuring out test scores, or analyzing business metrics, our percentage calculator makes it effortless. Get accurate results in seconds with clear explanations of how each calculation works.
A percentage is a way of expressing a number as a fraction of 100. The word 'percent' comes from the Latin 'per centum,' meaning 'by the hundred.' Percentages are used everywhere in daily life—from sales tax and tips to grades and statistics. Understanding percentages helps you make better financial decisions, interpret data accurately, and solve countless everyday problems.
Basic Formula
Percentage = (Part / Whole) × 100Calculate 'X% of Y', find what percentage X is of Y, calculate percentage increase or decrease, and more—all in one tool.
See exactly how each calculation is performed so you can learn and verify the math yourself.
Get accurate results immediately without manual calculations or formula memorization.
Calculate how much you'll save with a 25% off sale or determine the final price after multiple discounts.
Convert your test score to a percentage or find out what score you need to achieve your target grade.
Calculate profit margins, growth rates, conversion rates, and other key performance indicators.
Quickly figure out 15%, 18%, or 20% tips at restaurants without mental math.
To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((New - Original) / Original) × 100. For example, if a price goes from $80 to $100, the increase is ((100-80)/80) × 100 = 25%.