744.74% is the change from 38 to 321
Calculation steps:
[( 321 - 38 ) ÷ 38] x 100 = 744.74%
Formula
Percentage change = [(321 - 38) / 38] x 100
Subtract the new number by the original number
321 - 38 = 283
283 ÷ 38 = 7.447368421052632
7.447368421052632 x 100 = 744.74%