3750% is the change from 8 to 308
Calculation steps:
[( 308 - 8 ) ÷ 8] x 100 = 3750%
Formula
Percentage change = [(308 - 8) / 8] x 100
Subtract the new number by the original number
308 - 8 = 300
300 ÷ 8 = 37.5
37.5 x 100 = 3750%
Example