I think you may have misread slightly
431,539,300 (432M) units total
1,092,200 (1.1M) units for Windows = 0.253%, rounded to 0.3%
207,900 (208k) units for Blackberry = 0.048%, rounded to 0.0%
So if Blackberry had hit 216k users they would have been at 0.05% and been rounded to 0.1%.
Gotta love that rounding.