JSS did not improve as expected

[Stefanka L]

Hello,
Last time I was effected by the so called incident and my JSS dropped from 96 to 89%. The support told me it was not a technical problem, because I had a client who did not recommend me at all. And it should improve further if I complete my next jobs successfully. So I had 3 contracts ended for the period from 10th to 20th, all of them 5 stars and all clients were very happy. But as a result my JSS lifted from 89 to 91%. So I am wondering how can only one bad feedback lower my JSS 7%, and 3 great feedbacks raise it only 2 points?

[Petra R]

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Stefanka L wrote:
So I had 3 contracts ended for the period from 10th to 20th, all of them 5 stars and all clients were very happy. But as a result my JSS lifted from 89 to 91%. So I am wondering how can only one bad feedback lower my JSS 7%, and 3 great feedbacks raise it only 2 points?

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 Maths.

That is how percentages work I'm afraid.

If you have 9 green apples, you have 100% green apples

Then you get a red apple, and your green apple percentage falls to 90%

You would now need a whopping 10 green apples to get back to a green apple percentage of 95%

The closer you are to 100%, the more it takes to rise.