If Jakob has groomed 0.09 of the cats in the shelter, he has groomed 9% of the cats in the shelter.
We figure this out because we know that to convert a decimal to a percentage, we must multiply the decimal by 100 (equivalent to moving the decimal two places to the right).
0.09 * 100 = 9
Therefore, Jakob has groomed 9% of the cats in the shelter.
Hope this helps!