To convert a decimal into percent, multiply the decimal by 100 and then add a "%" sign.

$\displaystyle 3.15\times100=315$

Add a % sign.

$\displaystyle 315\%$

To change a demical to a percent, multiply the decimal by 100 and then add the percent sign.

$\displaystyle 0.49\times100 = 49$

Add the percent sign.

$\displaystyle 49\rightarrow49\%$

To change a decimal into a percent, start by multiplying the decimal by 100.

$\displaystyle 0.87\times100=87$

Then, add a percent sign to the end of that number.

$\displaystyle 87\rightarrow87\%$

To change a decimal into a percent, start by multiplying the decimal by 100.

$\displaystyle 0.71\times100=71$

Then add a percent sign to the end of the number.

$\displaystyle 71\rightarrow71\%$

To change a decimal into a percent, multiply the decimal by 100 then add the percent sign.

$\displaystyle 0.54\times100=54$

$\displaystyle 54\rightarrow 54\%$

To change a decimal into a percent, multiply the decimal by $\displaystyle 100$ then add a percent sign at the end of that number.

$\displaystyle 0.99\times100=99$

$\displaystyle 99\rightarrow99\%$

Percents are numbers expressing parts of $\displaystyle \small 100$: $\displaystyle \small \small 1\%$ means $\displaystyle \small 1$ part of $\displaystyle \small 100$, or $\displaystyle \small \frac{1}{100}$. 

The simplest way to convert a decimal to a percentage is to move the decimal place over two places to the right. We move the decimal point to after the hundredths place because we are rewriting the decimal as a portion of $\displaystyle \small 100$. Therefore:

$\displaystyle \small 0.9525=95.25\%$

Now, we need to round the percentage to the nearest tenth. The number after the tenths place is a five, so we need to round up:

$\displaystyle \small 95.25\%\Rightarrow95.3\%$

$\displaystyle \small 95.3\%$ is therefore our final answer.

Percents are numbers expressing parts of $\displaystyle \small 100$: $\displaystyle \small \small 84\%$ is the same thing as saying $\displaystyle \small 84$ parts of $\displaystyle \small 100$ or $\displaystyle \small \frac{84}{100}$

The simplest way to convert a decimal to a percentage is to move the decimal place over two places to the right. We move the decimal point to after the hundredths place because we are rewriting the decimal as a portion of $\displaystyle \small 100$. Therefore:

$\displaystyle \small 2.420398=242.0398\%$

In everyday usage, percents usually are between $\displaystyle \small \small 0\%$ and $\displaystyle \small 100\%$. However, when a number is greater than $\displaystyle \small 1$, it's corresponding percentage is going to be greater than $\displaystyle \small 100\%$. The next step of this problem is to round the percentage we have to the nearest hundredth. The number in the thousandths place is $\displaystyle \small 9$, therefore, we're going to round up:

$\displaystyle \small 242.0398\%\Rightarrow242.04\%$

$\displaystyle \small 242.04\%$ is therefore our final answer.