Year-over-year decrease Calculator tool

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original values a:
declines now value b:
fell: %

"Year-on-year" means the ratio of the same period, generally referring to the comparison between the cumulative indicators of a month this year and the cumulative indicators of the same month last year. As the name suggests, "year-on-year decline" refers to the ratio between the cumulative indicator of the current year and the cumulative indicator of the same month of the previous year.

Calculator formulas: ((B-a) /b) * 100