Measure vs Calculated Column when applying a formula

[amirabedhiafi]

I have the following table : 

I have this formula to calculate a measure :

(IO_WITHOUT_ERROR/IO_NIO)*100

When I use a calculated column, it works :

CalculatedColumn = (MyTable[IO_WITHOUT_ERROR]/MyTable[IO_NIO])*100

but when I use it for a measure, I get the following :

I want to understand the difference between Measure vs Calculated Colum in this context ?

[amitchandak · Accepted solution]

@amirabedhiafi , Measure can take the measure of summarized /aggregated columns

example

divide(Sum(MyTable[IO_WITHOUT_ERROR]), Sum(MyTable[IO_NIO]))*100

Calculated column calculations are stored. Measure calculations are done runtime 

refer: https://www.sqlbi.com/articles/calculated-columns-and-measures-in-dax/

[amirabedhiafi]

So basically it is related to the row context and the result of the row context ?