How to parse matching(regex) data into json format

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C#

regular-expression

Hi Guys, i have a concern related to regex parsing.

here is requirement, match string data through regex and convert matching data into JSON format

i have data in below string format and i need to parse matching data into json

PC : 10%  Mat PC : 10%  DN : 20%
PC : 10%  Mat PC : 10%  OP Mat : 10%
PC : 10%  Mat PC : 10%  PH : 10%
PC : 10%  Mat PC : 10%  PH : 20%
PC : 10%  Mat PC : 10%  PH : 20% DN : 20%
PC : 10%  Mat PC : 10%  PH : 30%
PC : 10%  Mat PC : 10%  PH : 30%  DN : 20%
PC : 10%  Mat PC : 10%  PH : 30%  OP Mat : 10%

expected output in below format

[
{
"PC":"10%",
"Mat PC":"10%",
"DN":"20%"
},
{
"PC":"10%",
"Mat":"10%",
"OP Mat":"10%"
},
{
"PC":"10%",
"Mat PC":"10%",
"PH":"20%"
},
{
"PC":"10%",
"Mat PC":"10%",
"PH":"20%"
}]

What I have tried:

i wrote below pattern to match string data

(([a-zA-Z \+\.\&\/]+)(?=:)|((?<=:)[0-9 ]+(?=%))|(?<=[0-9])%)

this pattern is working perfectly on the data matching (any optimized regex pattern will be appreciated), first part i have completed to match data through regex pattern but i don't know how to parse the same in json format through regex.