Percentage Calculator | Easy % Calculations

Formula

This calculator uses the standard percentage calculator formula:

Percentage Formula

Percentage = (Part / Whole) × 100

How do I calculate a percentage? ⌄

Divide the part by the whole and multiply by 100. For example, 25 out of 200 = (25/200) × 100 = 12.5%.

How do I find what percentage one number is of another? ⌄

Use the formula: (Part ÷ Whole) × 100. For example, what percentage is 45 of 180? = (45 ÷ 180) × 100 = 25%.

How do I calculate percentage increase? ⌄

Percentage increase = ((New Value − Old Value) ÷ Old Value) × 100. For example, from 80 to 100 = ((100−80)÷80) × 100 = 25% increase.

How do I calculate percentage decrease? ⌄

Percentage decrease = ((Old Value − New Value) ÷ Old Value) × 100. For example, from 120 to 90 = ((120−90)÷120) × 100 = 25% decrease.

What is the percentage difference between two numbers? ⌄

Percentage difference = (|V1 − V2| ÷ ((V1 + V2)/2)) × 100. This is used when comparing two values without a clear reference point.

How do I find a percentage of a number? ⌄

Multiply the number by the percentage and divide by 100. For example, 15% of 240 = 240 × 15 ÷ 100 = 36.