3800% is the change from 8 to 312
Calculation steps:
[( 312 - 8 ) ÷ 8] x 100 = 3800%
Formula
Percentage change = [(312 - 8) / 8] x 100
Subtract the new number by the original number
312 - 8 = 304
304 ÷ 8 = 38
38 x 100 = 3800%
Example