How can I calculate the percentage difference between these numbers?

9.99 and 9.81

9.99 and 9.96

10.70 and 10.93

10.70 and 10.65



I have tried to calculate this so many times and it always comes up with strange numbers. I need to calculate these to 3 decimal places for Biology.



I appreciate the help.How can I calculate the percentage difference between these numbers?
You want "difference" and not "change", so you'll have to pick one of the two numbers for it to be different from. Usually you'd pick the smaller number.



percentage difference = absolute of (value 1 - value 2) * 100 / (smaller value)



% diff (9.99 %26amp; 9.81) = (9.99 - 9.81) * 100 / 9.81 = 0.18 * 100 / 9.81 = 1.83 (3sf)

9.99 is 1.83% larger than 9.81



% diff (9.99 %26amp; 9.96) = (9.99 - 9.96) * 100 / 9.96 = 0.301 (3sf)

9.99 is 0.301% larger than 9.96



% diff (10.7 %26amp; 10.93) = (10.93 - 10.7) * 100 / 10.7 = 2.15 (3sf)

10.93 is 2.15% larger than 10.7



% diff (10.7 %26amp; 10.65) = (10.7 - 10.65) * 100 / 10.65 = 0.469 (3sf)

10.7 is 0.469% larger than 10.65