121.13% is the change from 284 to 628
Calculation steps:
[( 628 - 284 ) ÷ 284] x 100 = 121.13%
Formula
Percentage change = [(628 - 284) / 284] x 100
Subtract the new number by the original number
628 - 284 = 344
344 ÷ 284 = 1.2112676056338028
1.2112676056338028 x 100 = 121.13%