For a percent of total calculation think of a pie chart where each month is a slice and all the slices add up to 100. Ill show you how to use this to make quick work of calculating a column of percentages. Now to convert them into.
Total Percentage Amount Assuming that the total value is in cell A2 and percent in B2 the above formula turns into a simple A2B2 and returns 10450.
To show a number as a percent in Excel you need to apply the Percentage format to the cells. The answer 67 should appear in cell E6. For example enter 1500 into A1. For example if you want.