Reference definitions are not able to handle minus values

[Lunga001]

Description

When adding a % difference, the min and max values are mixed up.
It looks like the calculation is done without taking into account the negative values and only adding them once the calculation is done.

Reproduction guide

I added 20% as the error, and it shows the min value as -24 and the max value as -36.

Observed behaviour

This is wrong, as -36 is less than -24.

Expected behaviour

The minimum value should be -36, and the maximum value should be -24.

Versions

• OS: Linux

Screenshot

[xispa]

Thanks @Lunga001 for reporting. Addressed with #2470.