Answer:
90.48%
Step-by-step explanation:
From 84 seconds to 8 seconds
To find the percentage of increase or decrease. In the data number change from 84 to 8 seconds
So, decreases
Formula:
[tex]\%=\dfrac{Difference}{Original}\times 100[/tex]
Difference = 84 - 8
= 76
Original Number = 84
[tex]\text{Decrease Percentage} = \dfrac{76}{84}\times100 [/tex]
[tex]=90.48\%[/tex]
Hence, The decrease percentage is 90.48%
