Bug: Infinity percentage.

[CarlosLugones]

Describe the bug

Income, saving rate, and spending shows a "infinite" percentage, compared to previous month.

I just started using Maybe in the Umbrel OS, and maybe because there is no previous month, that's causing this bug.

To Reproduce

1. Start from 0 with a new Maybe instance.
2. Add some account.
3. Add a few transactions.
4. You will see "infinite%" up or down in the dashboard metrics.

Expected behavior

Showing the real percentage, or none.

Screenshots / Recordings

[zachgoll]

@CarlosLugones that metric is comparing against the prior month, which was 0%.

An increase from 0 -> 0.33 would be an infinite increase, so I think this is expected behavior. Once you have several months of data, you'll see a more meaningful metric here.

[CarlosLugones]

Infinity feels weird when speaking about money. I think that is confusing, but if you say that this is the expected behavior, okay. As a user, I found it confusing. @zachgoll

[zachgoll]

@CarlosLugones what would you display instead? I'm happy to change it if we can come up with a more intuitive value to put here. I just haven't been able to think of anything myself.

[CarlosLugones]

My recommendation would be to remove this, until you can showcase something.

If there is no previous month, don't show the "Infinity", neither "vs. last month".

It would be:
+0.33

I just asked a frontend expert and that was his recommendation also.

[jamie]

Other option is explicitly call out the missing data - "No data to compare from September" for instance.

[zachgoll]

@CarlosLugones makes sense to me, I think that's a reasonable solution. @justinfar would you agree with showing nothing if infinity?

@jamie I think that option ends up getting a bit messy given our limited space here, but could work in other parts of the app.

[CarlosLugones]

Voting for not showing anything. Let the user discover this after 1 month.