225.5% is the change from 251 to 817
Calculation steps:
[( 817 - 251 ) ÷ 251] x 100 = 225.5%
Formula
Percentage change = [(817 - 251) / 251] x 100
Subtract the new number by the original number
817 - 251 = 566
566 ÷ 251 = 2.254980079681275
2.254980079681275 x 100 = 225.5%