How Do You Calculate Percent Change Of Two Numbers?
Ever wonder how to determine the percent change of two numbers over a period of time? You have two numbers that represent values at two particular times. For example, if your annual earnings in 2005 were $20,000 and your annual earnings in 2006 were $25,678, you would like to know the percent increase in earnings from 2005 to 2006. Determine the difference between the new number and the old number. In this case you subtract your earnings in 2005 from your earnings in 2006. So, $25,678 minus $20,000 equals $5,678. $25,678 – $20,000 = $5,678. Now you divide the difference of the old number and the new number by the old number. So, $5,678 divided by $20,000 equals 0.2839. $5,678/$20,000 = 0.2839. To display as a percentage, multiply by 100%. 0.2839 x 100% = 28.29%. So, your annual earnings increased by 28.29% from 2005 to 2006. The formula is: Percent Change =((new number-old number)/old number))x100%.
