Percentage Calculator
X% of Y, or % increase/decrease between two values.
Use for margin, markup, tax, discount, growth rate. % change = ((New − Old) ÷ Old) × 100.
How to use
- Enter two values to find percentage, or value and % to find result.
Formula
Percentage = (Part ÷ Whole) × 100. Part = Whole × (Percent ÷ 100).
FAQs
How to calculate percentage?
Percentage = (Part ÷ Whole) × 100. E.g. 25 of 100 = 25%.
What is X% of Y?
Result = Y × (X ÷ 100). E.g. 20% of 500 = 100.
Quick business math
Stockkeeper calculates margins automatically. Focus on selling.
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