151.39% is the change from 251 to 631
Calculation steps:
[( 631 - 251 ) ÷ 251] x 100 = 151.39%
Formula
Percentage change = [(631 - 251) / 251] x 100
Subtract the new number by the original number
631 - 251 = 380
380 ÷ 251 = 1.5139442231075697
1.5139442231075697 x 100 = 151.39%