99.90%
STEPS:
Find the total sum
30.2 mil = 30,200,000 small businesses + 30,000 other = 30,230,000 total
Find the fraction that small businesses make up of the total
[tex]\frac{small~businesses}{total~businesses} = \frac{30,200,000}{30,230,000} = 0.9990[/tex]
Convert to percentage
0.9990 → % = 0.9990 × 100 = 99.90%
Hope this helps,