8450% is the change from 4 to 342
Calculation steps:
[( 342 - 4 ) ÷ 4] x 100 = 8450%
Formula
Percentage change = [(342 - 4) / 4] x 100
Subtract the new number by the original number
342 - 4 = 338
338 ÷ 4 = 84.5
84.5 x 100 = 8450%
Example