Q1) From 12 m to 18 m
It is a percentage increase
Percentage change = (18-12)/12 × 100
= 6/12 × 100
= 50%
Q2) From 27 days to 30 days
It is a percentage increase
Percentage change = (30-27)/27 × 100
= 3/27 × 100
= 11.1%
Q3) From $48.50 to $38.80
It is a percentage decrease
Percentage change = ($48.50 - $38.80)/48.50 × 100
= 9.7/48.50 × 100
= 20%
Q4) From 25 lb to 12 lb
It is a percentage decrease.
Percentage change = 25-12/25 ×100
= 13/25 × 100
= 52%
Q5) from 10mm to 3mm
it is a percentage decrease.
Percentage change = (10-3)/10 ×100
= 7/10 × 100
= 70%
Q6) From $875 to $1000
It is a percentage increase.
Percentage change = (1000-875)/875 × 100
= 125/875 ×100
= 14.3%
Q7) from $18.1 to $22.50
It is a percentage increase
Percentage change = (22.50-18.10)/18.10 × 100
= 4.4/18.10 × 100
= 24.3%
Q8) From 32 people to 3040 people
It is a percentage increase.
Percentage change = (3040-32)/32 × 100
= 3008/32 × 100
= 9400%
Q9) From 28 stray cats to 5 stray cats.
It is a percentage decrease.
Percentage change =(28-5)/ 28 × 100
= 23/28 × 100
= 82%
Q10) From 12 words to 90 words.
It is a percentage increase.
Percentage change = (90-12)/12 × 100
= 78/12 ×100
= 650%
Q11) From 47 mph to 35 mph
It is a percentage decrease
percentage change = (47 - 35)/47 × 100
= 13/47 × 100
= 25.5%
Q12) From 8 computers to 15 computers
It is a percentage increase
percentage change = (15-8)/8 × 100
= 7/8 × 100
= 87.5%