3937.5% is the change from 8 to 323
Calculation steps:
[( 323 - 8 ) ÷ 8] x 100 = 3937.5%
Formula
Percentage change = [(323 - 8) / 8] x 100
Subtract the new number by the original number
323 - 8 = 315
315 ÷ 8 = 39.375
39.375 x 100 = 3937.5%
Example