729.03% is the change from 31 to 257
Calculation steps:
[( 257 - 31 ) ÷ 31] x 100 = 729.03%
Formula
Percentage change = [(257 - 31) / 31] x 100
Subtract the new number by the original number
257 - 31 = 226
226 ÷ 31 = 7.290322580645161
7.290322580645161 x 100 = 729.03%
Example