251% is the change from 100 to 351
Calculation steps:
[( 351 - 100 ) ÷ 100] x 100 = 251%
Formula
Percentage change = [(351 - 100) / 100] x 100
Subtract the new number by the original number
351 - 100 = 251
251 ÷ 100 = 2.51
2.51 x 100 = 251%
Example