99.9% means 99.9 out of every 100.
Worked examples
99.9% of 100 = 99.90
99.9% of 250 = 249.75
99.9% of 1,000 = 999.00
99.9% of 100 = 99.90
99.9% of 250 = 249.75
99.9% of 1,000 = 999.00
Visual guide
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99.9% of a 100-part whole.
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99.9% of a 100-part whole.
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