Math6 min read
Percentage Decrease Calculator: Price Drops Worked Out
Percentage decrease = (old − new) ÷ old × 100. See ₹2,000 falling to ₹1,700 as 15%, how to find the original price, and why a 20% drop needs a 25% rise.
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- Math6 min read
Percentage Difference Formula and Examples
Percentage difference compares two values by dividing their gap by their average. See the formula, a worked ₹ example and how it differs from change.
- Math6 min read
How to Calculate Percentage Increase (Examples)
Percentage increase calculator formula, (new − old) ÷ old × 100, with a salary-hike example, how to add 15% to a price and the base mistake to avoid.
- Math7 min read
Proportion Calculator: Solve a/b = c/d Step by Step
Solve direct and inverse proportion with cross-multiplication or the unitary method, using price, speed, map-scale and recipe examples.
- Math6 min read
Ratio Calculator: Simplify and Share in a Ratio
Simplify a ratio with the greatest common factor, share an amount in a ratio such as 2 : 3 : 5, and convert ratios to fractions and percentages.
- Math4 min read
Percentage changes made simple
Learn how to calculate percentage increase and decrease with easy examples you can use every day.
Put what you learn into practice.
Explore our free calculators and apply these concepts to your own numbers.