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:
\(\%=\dfrac{Difference}{Original}\times 100\)
Difference = 84 - 8
= 76
Original Number = 84
\(\text{Decrease Percentage} = \dfrac{76}{84}\times100\)
\(=90.48\%\)
Hence, The decrease percentage is 90.48%
