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isn't answers for the first part should be {decreased by 22.88%}??
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sakshi2525
isn't answers for the first part should be {decreased by 22.88%}??

No, you have taken wrong base. The denominator will always be the initial. So \(\frac{671-824}{824}=-\frac{153}{824}\) ~ -18.6%, that is a decrease of 18.66%
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