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  2. Relative change - Wikipedia

    en.wikipedia.org/wiki/Relative_change

    A percentage change is a way to express a change in a variable. It represents the relative change between the old value and the new one. [6]For example, if a house is worth $100,000 today and the year after its value goes up to $110,000, the percentage change of its value can be expressed as = = %.

  3. Fold change - Wikipedia

    en.wikipedia.org/wiki/Fold_change

    This formulation has appealing properties such as no change being equal to zero, a 100% increase is equal to 1, and a 100% decrease is equal to −1. However, verbally referring to a doubling as a one-fold change and tripling as a two-fold change is counter-intuitive, and so this formulation is rarely used. Volcano plot showing metabolomic data ...

  4. Log reduction - Wikipedia

    en.wikipedia.org/wiki/Log_reduction

    In general, an n-log reduction means that the concentration of remaining contaminants is only 10 −n times that of the original. So for example, a 0-log reduction is no reduction at all, while a 1-log reduction corresponds to a reduction of 90 percent from the original concentration, and a 2-log reduction corresponds to a reduction of 99 ...

  5. How much does a 1% change in mortgage rates actually ... - AOL

    www.aol.com/finance/how-much-does-1-percent...

    A 1% rate reduction can translate to paying tens of thousands of dollars less in three key ways: It reduces your interest charges, which are the most expensive part of your mortgage repayment.

  6. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    In general, if an increase of x percent is followed by a decrease of x percent, and the initial amount was p, the final amount is p (1 + 0.01 x)(1 − 0.01 x) = p (1 − (0.01 x) 2); hence the net change is an overall decrease by x percent of x percent (the square of the original percent change when expressed as a decimal number).

  7. Data compression ratio - Wikipedia

    en.wikipedia.org/wiki/Data_compression_ratio

    Thus, a representation that compresses the storage size of a file from 10 MB to 2 MB yields a space saving of 1 - 2/10 = 0.8, often notated as a percentage, 80%. For signals of indefinite size, such as streaming audio and video, the compression ratio is defined in terms of uncompressed and compressed data rates instead of data sizes:

  8. 5 ways to tell if you’re on track for retirement — and 5 ...

    www.aol.com/finance/5-ways-tell-track-retirement...

    1. Use the Rule of 25 to get a ballpark number. A good rule of thumb to estimate your retirement savings goal is the Rule of 25.Simply multiply your desired annual retirement income by 25.

  9. D-value (microbiology) - Wikipedia

    en.wikipedia.org/wiki/D-value_(microbiology)

    From this perspective, D-values can be understood as roughly analogous to half lives of radioactive substances, however a half life involves a reduction of 50% rather than 90%. The half life is actually roughly 30% ( log 10 2 ≈ 30.103% ) of the D-value, so if D = 10 minutes, the number of living microorganisms will be halved in about 3 minutes.