4812.5% is the change from 8 to 393
Calculation steps:
[( 393 - 8 ) ÷ 8] x 100 = 4812.5%
Formula
Percentage change = [(393 - 8) / 8] x 100
Subtract the new number by the original number
393 - 8 = 385
385 ÷ 8 = 48.125
48.125 x 100 = 4812.5%
Example