Progressbar showing 100% as halfway finished

As you only posted pictures we can not tell but are all the cells based on the same data range?

Databar CF will evaluate values in relation to eachother so if all cells are 100% it will fill half when you set percent.
Instead of choosing percent choose automatic
OR choose number and fill 0 as minimum and 1 (=100%) as maximum. that way your bars will show correct fill

I cant remember exact explanation why percent does not work but it has to do with how excel evaluates the applied range when you choose percent it will compare each score with eachother and that causes excel to see 100% as only half filled when there are only 100% values, you can check by putting 0% (or any other then percentage) in 1 of the cells in the CF applied range. then 100% bars will show ok.
so normally when even 1 cell with a percentage is other then 100% it works but when all values are 100% (which is normally the goal if you are doing percentage completion) it gives the strange bars, but since 110% completed task is not possible (no brownie points for extra effort ) I use the number limit as shown above.
You cloud also "trick" excel by hiding a 0% value in one of the cells of the applied range than it will also evaluate properly with all 100% scores

Edit: to clarify based on Andy Pope's comment. I ASSUMED that the first 2 cells that show correct databar are in a different CF-rule.
I just recognised the problem from one of my sheets where I had a simular issue and above adjustments solved the problem for me.