However, 9.6% -> 9.8% is more than a 0.2% gain. It is a gain of nearly 2.1%.
To prove this, go back to the original numbers - the previous period's unemployment was under 14.8 million. The current period was just over 15.1 million (an increase of around 0.35 million).
To calculate the percent increase, take the gain times 100, divide by the base number, and you have your percent increase.
(0.35 x 100) / 14.8 = ~2.3 (you get closer to 2.1 if you use the full numbers rather than rounding).