For this type of problem we use this formula: \(\displaystyle \frac{difference}{original} \times 100\). "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: \(\displaystyle \frac{28-23}{23}\times 100 = \frac {5}{23}\times 100 \approx 22\%\). This is our percent increase. 

For this type of problem we use this formula: \(\displaystyle \frac{difference}{original} \times 100\). "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: \(\displaystyle \frac{35-20}{20}\times 100 = \frac {15}{20}\times 100 = 75\%\). This is our percent increase. 

For this type of problem we use this formula: \(\displaystyle \frac{difference}{original} \times 100\). "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: \(\displaystyle \frac{23-20}{20}\times 100 = \frac {3}{20}\times 100 = 15\%\). This is our percent increase. 

For this type of problem we use this formula: \(\displaystyle \frac{difference}{original} \times 100\). "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: \(\displaystyle \frac{21.5-20}{20}\times 100 = \frac {1.5}{20}\times 100 = 7.5\%\). This is our percent increase. 

To find the percent increase, follow these steps:

First, find the difference between the two values given:

\(\displaystyle \$103 - \$90 = \$13\)

Next, divide the difference in values by the original value:

\(\displaystyle \$13 \div \$90 = .144\)

Finally, multiply this decimal by one-hundred to find its percentage equivalent:

\(\displaystyle .144 \times 100 = 14.4\%\)

If your resting heart rate is 60 BPM and your heart rate increased by 85%, then your heart rate has increased by 85% of 60. Percentages are all relative. 85% means nothing unless it is 85% of something. The total heart rate then would be the sum of 60 and 85% of 60.

Find how much 85% of 60 is:

\(\displaystyle .85*60=51\)

Add the increase to the resting heart rate:

\(\displaystyle 60+51=111 \hspace{1mm}BPM\)

To find the percent of increase, use the following formula:

\(\displaystyle percent\;change=\frac{new-old}{old}\)

\(\displaystyle percent\;change=\frac{36-20}{20}=\frac{16}{20}=\frac{4}{5}=0.8\)

To find a percent change you need to find the increase or decrease amount and divide it by the original amount.

Original price was \(\displaystyle \$115\)

New price is \(\displaystyle \$225\)

Amount of increase was \(\displaystyle \$110\)

\(\displaystyle 110 / 115 = .95652174\)

Multiply that by \(\displaystyle 100\) to get it to a percent.

\(\displaystyle 95.65\)

Round it to the nearest percent would make it \(\displaystyle 96\%\)

To find the percent increase of a dozen of eggs, we first must find the price difference between the April and May prices:

\(\displaystyle \$3.58-\$2.09=\$1.49\)

The next step is to divide the difference in price by the original price for eggs. When multiplied by \(\displaystyle 100\%\), we are given our percent increase:

\(\displaystyle \frac{\$1.49}{\$2.09}\cdot100\%\)

\(\displaystyle 0.71\cdot100\%=71\%\)

For this type of problem we use this formula: 

\(\displaystyle \frac{difference}{original} \times 100\) 

"Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows:

\(\displaystyle \frac{13-10}{10}\times 100 = \frac {3}{10}\times 100 = 30\%\)

This our percent increase.