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Calculate percentage increase between cost and selling price to review markup in simple terms.
Use this markup percentage calculator when you want a fast percentage view of how far a selling price sits above the starting amount. The calculator is designed to give a fast answer, but the quality of the answer still depends on accurate inputs and a clear idea of what decision you are trying to support.
- Enter Calculation Type, Original value, and New value using the same units you plan to compare or report.
- Read the main percentage increase first, then use the supporting outputs to understand the trade-offs behind that result.
- Compare your numbers with the worked examples below if you want a quick reasonableness check.
The calculator switches between the most common percentage questions so you can move from raw numbers to a share, rate, or change figure quickly. On this page, the primary output is percentage increase.
Scenario 1: $42 cost increasing to $58 sale price. Inputs used: mode: change, valueA: 42, valueB: 58. Example result: 38.10. This pricing change represents 38.10 in percentage markup. Scenario 2: $125 cost increasing to $171 selling price. Inputs used: mode: change, valueA: 125, valueB: 171. Example result: 36.80. Across this price jump, the markup percentage comes to 36.80.
Core formula: percent of, percent share, or percentage change depending on mode. The calculator switches between three common percentage formulas: finding a share of a number, finding what percent one value is of another, and measuring change from one value to another.
- Percentage change uses the first value as the base.
- Formatted output adds percent signs only when the mode requires it.
Use this calculator when reviewing discounts, growth, margins, survey data, or any comparison where relative scale matters. Related paths for follow-up analysis include percentage calculator, discount percentage calculator, percentage increase calculator, and grade percentage calculator.
Most bad outputs come from a few repeated input errors or interpretation mistakes. Use this short checklist before relying on the result.
- Using the wrong mode for the question you are trying to answer.
- Confusing percentage points with percent change.
- Using the new value as the base when the old value should be the reference.
