Basically ,I am going to talk about two kinds of comparison, one of which I know the term for it while the other of which I don't know the term for it.
The term I know is cycle-increase rate，which used to describe the percentage of comparison when we compare a statistic one period this year to a statistic the period prior to that period last year.
The term I am looking for is used to describe the percentage of comparison when we compare a statistic one period this year to a statistic the same period last year.
Please give me a correct answer ,like the cycle-increase rate.
Term for a specific kind of comparison 
Linear Mode
