259.53% is the change from 257 to 924
Calculation steps:
[( 924 - 257 ) ÷ 257] x 100 = 259.53%
Formula
Percentage change = [(924 - 257) / 257] x 100
Subtract the new number by the original number
924 - 257 = 667
667 ÷ 257 = 2.595330739299611
2.595330739299611 x 100 = 259.53%