249.8% is the change from 251 to 878
Calculation steps:
[( 878 - 251 ) ÷ 251] x 100 = 249.8%
Formula
Percentage change = [(878 - 251) / 251] x 100
Subtract the new number by the original number
878 - 251 = 627
627 ÷ 251 = 2.49800796812749
2.49800796812749 x 100 = 249.8%