121.4% is the change from 285 to 631
Calculation steps:
[( 631 - 285 ) ÷ 285] x 100 = 121.4%
Formula
Percentage change = [(631 - 285) / 285] x 100
Subtract the new number by the original number
631 - 285 = 346
346 ÷ 285 = 1.2140350877192982
1.2140350877192982 x 100 = 121.4%