Add all the values given Find how many values are given Divide the total by the number of values For example calculate the average of 5290482981. Cross multiply to get y 100 200 25. Change new value-old value.
Thanks to Excel tasks such as calculating the Annual growth rate are very easy to do with percentage formulas.
You can then use the fill handle to drag the formula down to the rest of the scores. Once you have converted the percentages into decimals you will. Dont forget always start a formula with an equal sign. Change changeinitial value 100.