3887.5% is the change from 8 to 319
Calculation steps:
[( 319 - 8 ) ÷ 8] x 100 = 3887.5%
Formula
Percentage change = [(319 - 8) / 8] x 100
Subtract the new number by the original number
319 - 8 = 311
311 ÷ 8 = 38.875
38.875 x 100 = 3887.5%
Example