# Free Online Percentage Calculator

## Online Percentage Calculator

X is what % of Y?

is what % of ?

### How to use this Online percentage calculator

Discover a percentage or work out the percentage given numbers and percent values. Use percent formulas to figure out percentages and questions in equations. Add or subtract a percentage from a number or solve the equations.

### How to Calculate Percentages

There are many formulas for percentage problems. You can think of the most basic as X/Y = P x 100. The formulas below are all mathematical variations of this formula.

Let's explore the three basic percentage problems. X and Y are numbers and P is the percentage:

• Find P percent of X
• Find what percent of X is Y
• Find X if P percent of it is Y

Example 1:

X= 300

Y= 600

Results: 50%

Example 2:

X= 400

Y= 600

Results: 66.66%

Example 3:

X= 550

Y= 600

Results: 91.66%

Example 4:

X= 250

Y= 600

Results: 41.66%

Example 5:

X= 700

Y= 1000

Results: 70%

Example 6:

X= 849

Y= 1000

Results: 84.89%

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