To see if 89% is less than eight ninths, we need to convert eight ninths to a decimal so that the two can be readily compared.
We do this by multiplying 8 by 100 and dividing by 9 - 800 ÷ 9 = 88.8888888 (recurring) %.
So, if the 89% is exact, then it is not less than eight ninths.
Depending on the degree of precision required, 88.8888888% would usually be rounded up to 89% and in that case the two amounts would be considered equal.
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