The meme follows a simple formula: take a photo of someone or something that looks furious, then slap on the phrase "200% Mad" in ransom-note-style lettering. The text uses the same cut-out magazine letter aesthetic associated with the Expand Dong meme family, where words are assembled from mismatched characters clipped from different sources2. The exaggerated percentage cranks the anger reading past any reasonable scale, turning genuine rage into something absurd.

The exact first post is unknown, but 200% Mad originated on 4chan sometime in 2014. It drew its visual language from the Expand Dong format, which itself was a staple of the imageboard's shitposting culture2. The meme applied that chaotic typography to a new concept: quantifying anger at twice the maximum level.

The format is straightforward. Find or take a photo of someone, an animal, or a character that looks visibly angry or enraged. The more extreme the expression, the better. Then add the text "200% Mad" in the Expand Dong cut-out letter style, where each character looks like it was snipped from a different magazine. The humor comes from the deadpan quantification of obvious fury. Variations sometimes swap "200%" for other absurd numbers or replace "Mad" with different emotions or phrases, as the "420 blaze it" variant showed2.