4037.5% is the change from 8 to 331
Calculation steps:
[( 331 - 8 ) ÷ 8] x 100 = 4037.5%
Formula
Percentage change = [(331 - 8) / 8] x 100
Subtract the new number by the original number
331 - 8 = 323
323 ÷ 8 = 40.375
40.375 x 100 = 4037.5%
Example