338% is the change from 100 to 438
Calculation steps:
[( 438 - 100 ) ÷ 100] x 100 = 338%
Formula
Percentage change = [(438 - 100) / 100] x 100
Subtract the new number by the original number
438 - 100 = 338
338 ÷ 100 = 3.38
3.38 x 100 = 338%
Example