How do I calculate fold change?

[lvay]

How do I calculate fold change?

Is it final value over initial value?

e.g. 1.9 increases to 2.5, so 2.5/1.9?

or would I use this method (B-A)/A e.g. (2.5-1.9)/1.9 ?

 

[stapel]

How do I calculate fold change?

What is meant by "fold change"? What (mathematically or otherwise) are you talking about?

Is it final value over initial value?

e.g. 1.9 increases to 2.5, so 2.5/1.9?

or would I use this method (B-A)/A e.g. (2.5-1.9)/1.9 ?

What are "A" and "B"? What are you talking about?

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