281.58% is the change from 38 to 145
Calculation steps:
[( 145 - 38 ) ÷ 38] x 100 = 281.58%
Formula
Percentage change = [(145 - 38) / 38] x 100
Subtract the new number by the original number
145 - 38 = 107
107 ÷ 38 = 2.8157894736842106
2.8157894736842106 x 100 = 281.58%