350% is the change from 38 to 171
Calculation steps:
[( 171 - 38 ) ÷ 38] x 100 = 350%
Formula
Percentage change = [(171 - 38) / 38] x 100
Subtract the new number by the original number
171 - 38 = 133
133 ÷ 38 = 3.5
3.5 x 100 = 350%
Example