400% is the change from 38 to 190
Calculation steps:
[( 190 - 38 ) ÷ 38] x 100 = 400%
Formula
Percentage change = [(190 - 38) / 38] x 100
Subtract the new number by the original number
190 - 38 = 152
152 ÷ 38 = 4
4 x 100 = 400%
Example