4287.5% is the change from 8 to 351
Calculation steps:
[( 351 - 8 ) ÷ 8] x 100 = 4287.5%
Formula
Percentage change = [(351 - 8) / 8] x 100
Subtract the new number by the original number
351 - 8 = 343
343 ÷ 8 = 42.875
42.875 x 100 = 4287.5%
Example