Wow, myBB made an article out of articles and is trying really hard. Too hard.
Well, lets get things right first - quoting the NEW AGE is not the smartest move.
More importantly, NEW AGE is saying 250 000 was sold that week. Ie, total = total + 250 000 in the week. NEW AGE is not saying the total sales are 250 000.
Taking the previous total was 320,000 + 250 000 = 570 000. And rounding down for a press statement isn't the worst idea out there.
Then there is the problem with words like "estimated, about, approximately" used everywhere. The news articles are not quoting their sources on where they get these numbers.
This is piss poor journalism on myBB side. I'd suggest taking the article down and getting your article quality up to scratch.