48.97% is the change from 390 to 581
Calculation steps:
[( 581 - 390 ) ÷ 390] x 100 = 48.97%
Formula
Percentage change = [(581 - 390) / 390] x 100
Subtract the new number by the original number
581 - 390 = 191
191 ÷ 390 = 0.4897435897435897
0.4897435897435897 x 100 = 48.97%