121.9% is the change from 306 to 679
Calculation steps:
[( 679 - 306 ) ÷ 306] x 100 = 121.9%
Formula
Percentage change = [(679 - 306) / 306] x 100
Subtract the new number by the original number
679 - 306 = 373
373 ÷ 306 = 1.2189542483660132
1.2189542483660132 x 100 = 121.9%