Question
Find the percentage change from the first quantity to the second:
$50$ cm, $45$ cm

Answer

$50 \ cm , 45 \ cm $
$\text { Decrease }=50 \ cm\  -45\ cm =5\ cm $
$\text { Percentage decrease }=\frac{5}{50} \times 100=10 \%$
Hence, decrease $=10 \%$

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