98.01% is the change from 251 to 497
Calculation steps:
[( 497 - 251 ) ÷ 251] x 100 = 98.01%
Formula
Percentage change = [(497 - 251) / 251] x 100
Subtract the new number by the original number
497 - 251 = 246
246 ÷ 251 = 0.9800796812749004
0.9800796812749004 x 100 = 98.01%