Not able to calculate Average distribution

[Anonymous]

Hello,

I am try to show the distribution of Connections. I need percentage of distribution

PFA file.

CONNECTION TYPE	Average Cost Per Employee	Need This
A	-71	-17%
B	-39	-9%
C	-334	-79%
D	-11	-3%
E	336	79%
F	50	12%
G	94	22%
H	-155	-36%
UNKNOWN	554	130%