$1.$Increase $800$ by $12\%.$ What is the answer?

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$12\%=12/100=\mathrm{.}12$

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$800*\mathrm{.}12=96$

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$800+96=896$

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Now take your answer and decrease it by $12\%.$ What is the answer?

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$12\%=12/100=\mathrm{.}12$

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$896*\mathrm{.}12=107\mathrm{.}52$

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$896107\mathrm{.}52=788\mathrm{.}48$

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Why are the two answers not the same?

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