To convert $9\%$ into a decimal, we divide $9$ by $100.$

Remember that to divide a number by $100,$ we move the decimal point two places to the left:

\[ 9\div 100 = 0.09 \]

So, $9\%$ is the same as $\bbox[4pt,border: 1px solid lightgray]{0.09}.$

To convert $18\%$ into a decimal, we divide $18$ by $100.$

Remember that to divide a number by $100,$ we move the decimal point two places to the left:

\[ 18\div 100 = 0.18 \]

So, $18\%$ is the same as $0.18.$

To convert $11.3 \%$ into a decimal, we divide $11.3$ by $100.$

Remember that to divide a number by $100,$ we move the decimal point two places to the left:

\[ 11.3 \div 100 = 0.113 \]

So, $11.3 \%$ is the same as $0.113.$

To convert $300 \%$ into a decimal, we divide $300$ by $100.$

Remember that to divide a number by $100,$ we move the decimal point two places to the left:

\[ 300 \div 100 = 3 \]

So, $300 \%$ is the same as $3.$

To convert $160\%$ into a decimal, we divide $160$ by $100.$

Remember that to divide a number by $100,$ we move the decimal point two places to the left:

\[ 160\div 100 = 1.6 \]

So, $1.6$ is equivalent to $160\%.$

To convert $0.9$ into a percentage, we multiply it by $100.$

Remember that to multiply a number by $100,$ we move the decimal point two places to the right: \[ 0.9 \times 100 = 90 \]

Finally, we write the result using the percent sign. So, our final answer is $\bbox[4pt,border: 1px solid lightgray]{90}\%.$

To convert $0.616$ into a percentage, we multiply it by $100.$

Remember that to multiply a number by $100,$ we move the decimal point two places to the right:

\[ 0.616 \times 100 = 61.6 \]

Finally, we write the result using the percent sign. So, our final answer is $\bbox[4pt,border: 1px solid lightgray]{61.6} \%.$

To convert $1.9$ into a percentage, we multiply it by $100.$

Remember that to multiply a number by $100,$ we move the decimal point two places to the right:

\[ 1.9 \times 100 = 190 \]

Finally, we write the result using the percent sign. So, our final answer is $190 \%.$

To convert $2.05$ into a percentage, we multiply it by $100.$

Remember that to multiply a number by $100,$ we move the decimal point two places to the right:

\[ 2.05 \times 100 = 205 \]

Finally, we write the result using the percent sign. So, our final answer is $205\%.$

To convert $2.508$ into a percentage, we multiply it by $100.$

Remember that to multiply a number by $100,$ we move the decimal point two places to the right: \[ 2.508 \times 100 = 250.8 \]

Finally, we write the result using the percent sign. So, our final answer is $\bbox[4pt,border: 1px solid lightgray]{250.8}\%.$