Perform calculations on tabulated results and print the results in tabulated form

I have a report which displays the clock periods along with the clock names and duty cycle. Now, I would like to use tcl or awk or perl to make it display with clock period interms of freq and the duty cycle in percentage (%). Which is the best way and how do I do it?

****************************************
Report : clock
Design : abc
Version: some version
Date   : xxx
****************************************

Attributes:
    p - Propagated clock
    G - Generated  clock
    I - Inactive   clock

Clock             Period          Waveform            Attrs     Sources
-----------------------------------------------------------------------
axi_ACLK          1.2500          {0.0000 0.6250}               {axi_ACLK}
xyz
                  1.2500          {0.0000 0.6250}     G         {abc/xyz}

I want the output displayed something like this(please note that xyz period is on the next line):

Clock             Period          Waveform            Attrs     Sources
-----------------------------------------------------------------------

axi_ACLK          800          50%               {axi_ACLK}
xyz
                  800          50%    G         {abc/xyz}

Thanks Ravi