Math

Calculate Percentage Increase Between Two Numbers

Built by Kevin Glover · @gloverbuilds · Verified formula

Find the percentage increase from one value to another. Simple formula with step-by-step explanation.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

The Percentage Increase Formula
Common Mistakes

La Formule

Augmentation % = ((Nouveau - Ancien) ÷ Ancien) × 100. De 45 000 à 52 000 € : +15,6%. Pour calculer la valeur après augmentation : Ancien × (1 + %/100). 45 000 × 1,15 = 51 750 €. L'augmentation salariale moyenne en France : 3-5%.

Contexte

Si votre augmentation est inférieure à l'inflation, votre pouvoir d'achat baisse. +3% d'augmentation avec 3,5% d'inflation = -0,5% de pouvoir d'achat réel.

⚡ CalcWolf Insight

Percent increase calculator captures a different search intent than percentage change — users specifically want to know "how much did X go up by." This variant alone gets 60K+ monthly searches and is often the exact query students type for homework.

Frequently asked questions

Comment calculer ?▾

((Nouveau - Ancien) ÷ Ancien) × 100. Salaire de 38K à 41K : +7,9%.

Quelle augmentation demander ?▾

Minimum : inflation (~3%). Correcte : 5-7%. Promotion : 10-20%. Changement d'entreprise : 15-25%.

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Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →