4262.5% is the change from 8 to 349
Calculation steps:
[( 349 - 8 ) ÷ 8] x 100 = 4262.5%
Formula
Percentage change = [(349 - 8) / 8] x 100
Subtract the new number by the original number
349 - 8 = 341
341 ÷ 8 = 42.625
42.625 x 100 = 4262.5%
Example