258.8% is the change from 250 to 897
Calculation steps:
[( 897 - 250 ) ÷ 250] x 100 = 258.8%
Formula
Percentage change = [(897 - 250) / 250] x 100
Subtract the new number by the original number
897 - 250 = 647
647 ÷ 250 = 2.588
2.588 x 100 = 258.8%
Example