I am trying to understand Gene expression data analysis. Could someone the percentage of change of the GE calculating from log2 fold change (L2FC)?

> FoldChange = μ_Treatment / μ_Control
> 
> log2FC=Log2(μ_Treatment)-Log2(μ_Control)


seems correct to me. log2FC is more informative as you will see the direction (sign) and the effect.

    Treatment = 10
    Control = 100

`FoldChange = 10/100 = 0.1` which is not informative

`log2FC = log2(10)-log2(100) = -3.3` which tells the effect and direction.