181.6% is the change from 250 to 704
Calculation steps:
[( 704 - 250 ) ÷ 250] x 100 = 181.6%
Formula
Percentage change = [(704 - 250) / 250] x 100
Subtract the new number by the original number
704 - 250 = 454
454 ÷ 250 = 1.816
1.816 x 100 = 181.6%
Example