Let's look at it this way, using your numbers:
- the TOP 400 earners paid 19.8% of their income in taxes.
- the BOTTOM 50% of earners paid 19.5% of their income in taxes.
Unmentioned is those between the bottom 50% and the top 400 (probably the (0.0001%) - they are the ones bearing the brunt.
I am just below the top 1% in earnings and within the top 1% in wealth, and I feel that top earners can and should pay more to support the nation.
I hope your job doesn't involve math or reading graphs....you might want to try those numbers again.