Child support calc and pension

[PostHeads123]

I pay child support based on gross earnings, I get a pension through work that they pay into and I pay 2% myself in. I want / need to increase my own contribution to 5%, would that be factored into how they calc my gross wage for to work out the child support payment as my income dropping ? I had a google and its a bit unclear, I think it would be taken into consideration but Im not sure ?

Thanks

[PostHeads123]

Thanks for the replies.