638.24% is the change from 34 to 251
Calculation steps:
[( 251 - 34 ) ÷ 34] x 100 = 638.24%
Formula
Percentage change = [(251 - 34) / 34] x 100
Subtract the new number by the original number
251 - 34 = 217
217 ÷ 34 = 6.382352941176471
6.382352941176471 x 100 = 638.24%