38.8% is the change from 250 to 347
Calculation steps:
[( 347 - 250 ) ÷ 250] x 100 = 38.8%
Formula
Percentage change = [(347 - 250) / 250] x 100
Subtract the new number by the original number
347 - 250 = 97
97 ÷ 250 = 0.388
0.388 x 100 = 38.8%
Example