BD vs DVD -- Is it a lie to present market share in terms of revenue?

[Galaki]

If you sold 10 units last year and then sold 1000 units this year. You've increased 100 folds of sales. In percentage, 1000% increase.

If you sold 1,000,000 units last year and then sold 1,500,000 this year. You've increased sales by 50%. Crappy sales, aren't it?