# 90 percent of one hundred Dollars

Using this tool you can find any percentage in three ways. So, we think you reached us looking for answers like: What is 90 (90%) percent (%) of one hundred (100)? Or may be: 90 percent of one hundred Dollars. See the solutions to these problems just after the percentage calculator below.

See the solutions to these problems just after the percentage calculator below.

What is % of ?

### Percentage Calculator 2

is what percent of ?

### Percentage Calculator 3

is % of what?

If you are looking for a Discount Calculator, please click here.

## How to work out percentages - Step by Step

Here are the solutions to the questions stated above:

### 1) What is 90% of 100?

Always use this formula to find a percentage:

% / 100 = Part / Whole replace the given values:

90 / 100 = Part / 100

Cross multiply:

90 x 100 = 100 x Part, or

9000 = 100 x Part

Now, divide by 100 and get the answer:

Part = 9000 / 100 = 90

### 2) 90 is what percent of 100?

Use again the same percentage formula:

% / 100 = Part / Whole replace the given values:

% / 100 = 90 / 100

Cross multiply:

% x 100 = 90 x 100

Divide by 100 and get the percentage:

% = 90 x 100 / 100 = 90%