3737.5% is the change from 8 to 307
Calculation steps:
[( 307 - 8 ) ÷ 8] x 100 = 3737.5%
Formula
Percentage change = [(307 - 8) / 8] x 100
Subtract the new number by the original number
307 - 8 = 299
299 ÷ 8 = 37.375
37.375 x 100 = 3737.5%
Example