It's because the total isn't all your percentages added up they look at what you have been awarded for individual conditions then create an overall rating off that. It's to prevent someone who may have 10 small little conditions from getting 100% when they really aren't 100% disabled.
So if you have 3 conditions one with 70%, 10% and 40% they will look at it and go overall his rating is 80% disabled even though the total of the 3 things you are getting paid for is over 100% you can't be more than 100% disabled.
So if you have 3 conditions one with 70%, 10% and 40% they will look at it and go overall his rating is 80% disabled even though the total of the 3 things you are getting paid for is over 100% you can't be more than 100% disabled.


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