1️⃣ What is X% of Y?

What is % of ?

2️⃣ X is what % of Y?

is what % of ?

3️⃣ Percentage Change (Increase / Decrease)

From to

4️⃣ Increase / Decrease a Number by %

%

5️⃣ Marks to Percentage

Obtained out of

📋 Quick Reference — Common Percentages

Formulas:
Percentage = (Part / Whole) × 100
% Change = [(New − Old) / Old] × 100
X% of Y = (X / 100) × Y
Marks % = (Obtained / Total) × 100