The table below shows the quarterly unit sales for two new products, the AlphaWidget and the BetaGadget, in their first year of release.
| Quarter | AlphaWidget Sales | BetaGadget Sales |
|---|---|---|
| Q1 | 500 | 800 |
| Q2 | 650 | 920 |
| Q3 | 700 | 850 |
| Q4 | 850 | 1100 |
What was the approximate percentage increase in sales for the AlphaWidget from Q1 to Q4?