Alright - Im not familiar with what color Clairols Natural Light Golden Brown 116A is.
Ummmm - lets do the super simple explanation - but it will involve you going to a beauty supply store (Like Sally's)
***Alright - if you have natural red in your hair (most people do) and you want it to remain "golden" or "warm" but -not- red, you need to use a neutral, or even an ash. The color on the swatch will look dull, but this will not be the color you end up with, as youve got red in your hair.
*** Hair color lift depends on the peroxide you use. Generally if you are lifting more than 4 levels, you dont want to do that at home. But it sounds like youre not lifting THAT much. THAT much woudl bring most people to blonde.
*** Keeping the above in mind - you choose a peroxide based on the lift level you need. 10 volume is 1 life (or none)
20 volume is 2 levels
30 volume is 3 levels
40 volume is 4 levels
So, if I were to simply guess.... Id assume youre probably at like a level 3-4 naturally (see picture, 1 is at the bottom - 10 is at the top) And remember - this is just a "base" not taking into account red or ash in hair:
Soooo - you wanna be at maybe a level 6-7-ish? But warm/gold?
Again - if Im right with what Im guessing - You need to find a neutral level 6/7 .... do NOT get a red, or a gold, or a warm...youll be too red.
So - Neutral Level 6 or 7 (see how light you want it)
With equal parts of a 30 volume peroxide.... I'd leave it on probably 20 - 25 minutes. Just watch your color, and see how it's lifting. Just watch your lift - not the color - you should be "lifted" 3 levels, or so.