15.2% is the change from 250 to 288
Calculation steps:
[( 288 - 250 ) ÷ 250] x 100 = 15.2%
Formula
Percentage change = [(288 - 250) / 250] x 100
Subtract the new number by the original number
288 - 250 = 38
38 ÷ 250 = 0.152
0.152 x 100 = 15.2%
Example