Update number.py

[munterkalmsteiner]

For numbers that are percentages, set the corresponding unit (%).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.48%. Comparing base (c24a33c) to head (4b635fc).
Report is 24 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##              main     #242      +/-   ##
===========================================
- Coverage   100.00%   99.48%   -0.52%     
===========================================
  Files           14       14              
  Lines         1696     1755      +59     
===========================================
+ Hits          1696     1746      +50     
- Misses           0        9       +9     

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[jonasbkarlsson]

Thanks for the PR. It took a while...