283.6% is the change from 250 to 959
Calculation steps:
[( 959 - 250 ) ÷ 250] x 100 = 283.6%
Formula
Percentage change = [(959 - 250) / 250] x 100
Subtract the new number by the original number
959 - 250 = 709
709 ÷ 250 = 2.836
2.836 x 100 = 283.6%
Example