Actually Deepstread this is a positive announcement.
If you look at the number of shares owned by Black rock before and present it is around 800,000 new shares. Look at the below numbers and in the announcement.
Reason why the percentage is 1% less is as you said, there is an increase in shares issued which were allocated to blumont as per the previous announcement in the week.
52,897,543 12.05
53,643,941 11.02