123.38% is the change from 278 to 621
Calculation steps:
[( 621 - 278 ) ÷ 278] x 100 = 123.38%
Formula
Percentage change = [(621 - 278) / 278] x 100
Subtract the new number by the original number
621 - 278 = 343
343 ÷ 278 = 1.2338129496402879
1.2338129496402879 x 100 = 123.38%