4200% is the change from 8 to 344
Calculation steps:
[( 344 - 8 ) ÷ 8] x 100 = 4200%
Formula
Percentage change = [(344 - 8) / 8] x 100
Subtract the new number by the original number
344 - 8 = 336
336 ÷ 8 = 42
42 x 100 = 4200%
Example