Calculate the Relative Percent Change Between Two Numbers & the Actual Change (Absolute Difference). Is the Change From the Original (Initial, Reference) to the New Value an Increase or a Decrease?

Online calculator: relative percent change

Latest calculated relative percentage increase changes

Relative percent change from the original number 3,134 to the new value of 4,236 = 35.162731333759% Sep 27 13:03 UTC (GMT)
Relative percent change from the original number 1,800 to the new value of 3,451 = 91.722222222222% Sep 27 13:03 UTC (GMT)
Relative percent change from the original number 295,787 to the new value of 363,196 = 22.789710163057% Sep 27 13:03 UTC (GMT)
Relative percent change from the original number 0.0056 to the new value of 0.0114 = 103.571428571429% Sep 27 13:03 UTC (GMT)
Relative percent change from the original number 1,307,189 to the new value of 1,430,460 = 9.430235413548% Sep 27 13:02 UTC (GMT)
Relative percent change from the original number - 2.12 to the new value of - 2.05 = 3.301886792453% Sep 27 13:02 UTC (GMT)
Relative percent change from the original number 1,800 to the new value of 3,127 = 73.722222222222% Sep 27 13:02 UTC (GMT)
Relative percent change from the original number 4.9 to the new value of 6.17 = 25.918367346939% Sep 27 13:02 UTC (GMT)
Relative percent change from the original number 19,855,876 to the new value of 31,383,921 = 58.058606933283% Sep 27 13:01 UTC (GMT)
Relative percent change from the original number 261 to the new value of 336 = 28.735632183908% Sep 27 13:01 UTC (GMT)
Relative percent change from the original number 3 to the new value of 32 = 966.666666666667% Sep 27 13:01 UTC (GMT)
Relative percent change from the original number 0.25 to the new value of 54.35 = 21,640% Sep 27 13:00 UTC (GMT)
Relative percent change from the original number 0.00008265 to the new value of 0.0001013 = 22.565033272837% Sep 27 13:00 UTC (GMT)
All relative percentage increase changes, calculated by users


>> Calculate the Relative Percentage Decrease


Relative percentage change (relative percentage increase or decrease)

The absolute change (actual difference):

  • The difference between two numerical quantities, y - x, is called absolute difference, actual change or actual difference.
  • When x value is a reference value (the starting value that the value of y is compared to) then the difference between y and x is called the absolute change.
  • The actual difference (actual change) between two values is not always a good way to compare two numbers.
  • The actual change of one unit from number 8 to number 9 is of much more significance than the same difference of one unit between the much larger numbers of 9,999,998 and 9,999,999.
  • In this case we need to take into account the "size" of the quantities involved.

Relative change (from a number x to another number, y):

  • Relative change (from x to y) = (Absolute change from x to y) / |x| = (y - x) / |x|, where x is the reference value that y is being compared to and |x| is the positive value of x.
  • For values y larger than the reference value x, the relative change is a positive number, and in this case we have a so called relative increase.
  • For values y that are smaller than the reference x value, the relative change is negative and in this case we have what it's called a relative decrease.
  • The relative change is not defined if the reference value is zero, x = 0.

Relative percentage change

  • Relative percentage change is the Relative change calculated as a percentage;
  • Relative percentage change = Relative change × 100/100 = (Relative change × 100)%.

Examples of calculating the relative percentage change (increase or decrease)

  • Relative change (from 2 to 3) = (3 - 2) / |2| = 1/2 = 0.5 = 50%; this change is a relative percentage increase;
  • Relative change (from 9.999.999.998 to 9.999.999.999) = (9.999.999.999 - 9.999.999.998) / |9.999.999.998| = 1/9.999.999.998 ≈ 0 = 0%;
  • Relative change (from 2 to -3) = (-3 - 2) / |2| = -5/2 = -2.5 = -250%; this change is a relative percentage decrease;
  • Relative change (from 9.999.999.998 to -9.999.999.999) = (-9.999.999.999 - 9.999.999.998) / |9.999.999.998| = -19.999.999.997/9.999.999.998 ≈ -2 = -200%; this change is a relative percentage decrease;
  • Relative change (from -2 to 3) = (3 - (-2)) / |-2| = (3 + 2) / 2 = 5/2 = 2.5 = 250%; this change is a relative percentage increase;
  • Relative change (from -9.999.999.998 to 9.999.999.999) = (9.999.999.999 - (-9.999.999.998)) / |-9.999.999.998| = (9.999.999.999 + 9.999.999.998) / 9.999.999.998 = 19.999.999.997/9.999.999.998 ≈ 2 = 200%; this change is a relative percentage increase.

>> Calculate the Relative Percentage Decrease