Percentage Calculator — Calculate Any Percentage Instantly
Calculate percentages in 3 ways: find what X% of a number is, calculate percentage increase or decrease, and find what percentage one number is of another. Free, instant, no signup.
Percentage Calculator Formula
The percentage formula has three common variations depending on what you want to find. All three are based on the same fundamental relationship between the part, whole, and percentage rate.
Variant 1 — Find the part: Part = (Percentage ÷ 100) × Whole
Variant 2 — Find percentage change: Change% = ((New − Old) ÷ |Old|) × 100
Variant 3 — Find what percent: Percent = (Part ÷ Whole) × 100
How to Calculate Percentage Calculator Manually
- 1Identify what type of percentage calculation you need: finding a part, finding % change, or finding what percent something is.
- 2For "X% of Y": Divide X by 100 then multiply by Y. Example: 25% of 200 = 0.25 × 200 = 50.
- 3For "% change": Subtract old from new, divide by old value, multiply by 100. A positive result is increase, negative is decrease.
- 4For "X is what % of Y": Divide X by Y then multiply by 100. Example: 50 is what % of 200 = (50÷200)×100 = 25%.
Calculation Example
Question: What is 15% of PKR 8,500?
Formula: (15 ÷ 100) × 8,500 = 0.15 × 8,500
Result: PKR 1,275
Question: Salary increased from PKR 80,000 to PKR 95,000. What is the % increase?
Formula: ((95,000 − 80,000) ÷ 80,000) × 100 = (15,000 ÷ 80,000) × 100
Result: 18.75% increase