12/89 as a percentage is 13.48%. This small fraction shows up in many everyday situations, like when a tiny part of a group is counted.
The fraction 12/89 means you have 12 pieces out of a total of 89. When you look at it as a percentage, it tells you that about thirteen out of every hundred pieces would be the same amount.
Because the number is rounded to two decimal places, the exact value is a little bit different, but 13.48% is close enough for most practical uses, such as quick estimates or simple reports.