800% is the change from 38 to 342
Calculation steps:
[( 342 - 38 ) ÷ 38] x 100 = 800%
Formula
Percentage change = [(342 - 38) / 38] x 100
Subtract the new number by the original number
342 - 38 = 304
304 ÷ 38 = 8
8 x 100 = 800%
Example