Percentage Math: Calculate Discounts & Tax Like a Pro

Percentages are everywhere—from the 20% tip at a restaurant to the 15% VAT on your utility bill. Despite their prevalence, many people find percentage math intimidating. We break it down into simple, repeatable formulas.

The Core 3 Formulas

• Finding the Percentage: (Part / Whole) x 100
• Calculating a Discount: Original Price x (Discount % / 100)
• Calculating a Markup: Original Price x (1 + (Markup % / 100))

Short on time? Use our Percentage Tool for instant results.