# Calculate percentages

Ok I thought I would know how to compute this but I'm having a brain freeze right now.

I need to calculate the % of 2 percentages. I have a value of 61% which is the percent of sales QTD v sales target. Then I have another percentage which shows how many days in the quarter have elapsed so far, which is 78%. So I need to figure out what percent the 61% is of the 78%. Any ideas?
SOLUTION
stevejacob68

membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.

Shouldn't it be higher than that? I would think that 50% of 78% would be 39% so if it's 61% it seems like it should be higher than 47.58%?
Rgonzo1971

Hi,

50% = 39%
+10% =  7.8%
+  1% = 0.78%
=>
61%= 47.58%

ok I'm confused. Let's say my percent is 39% instead of 61% and it's still 78% through the quarter. What would be the answer to that? Wouldn't it be 50% since that's half of 78%?

membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
it may be easier to explain by looking at true values rather than percentages.

Using your example, lets say your quarter target is \$1000 and you currently have \$610 which is 61% of the target by doing (610/1000)*100

As you are 78% of the way through the quarter you should have \$780. The \$610 as a percentage of \$780 is (610/780)*100 = 78.21%, as per previous solution but this doesn't really show anything other than you are behind schedule. In Earned Value Management (EVM) this would be shown as an indice by deducting the result from 1

1-(610/780) = 0.22

0 to 1 represents behind schedule
Less than 0 represents ahead of schedule

In order to get back on target performance has to increase by 177% ie (390/220)*100  390 being balance of target remaining and 220 being the expected traget remaining.

Thanks
Rob H