287.55% is the change from 257 to 996
Calculation steps:
[( 996 - 257 ) ÷ 257] x 100 = 287.55%
Formula
Percentage change = [(996 - 257) / 257] x 100
Subtract the new number by the original number
996 - 257 = 739
739 ÷ 257 = 2.875486381322957
2.875486381322957 x 100 = 287.55%