13.6% is the change from 250 to 284
Calculation steps:
[( 284 - 250 ) ÷ 250] x 100 = 13.6%
Formula
Percentage change = [(284 - 250) / 250] x 100
Subtract the new number by the original number
284 - 250 = 34
34 ÷ 250 = 0.136
0.136 x 100 = 13.6%
Example