124.84% is the change from 306 to 688
Calculation steps:
[( 688 - 306 ) ÷ 306] x 100 = 124.84%
Formula
Percentage change = [(688 - 306) / 306] x 100
Subtract the new number by the original number
688 - 306 = 382
382 ÷ 306 = 1.2483660130718954
1.2483660130718954 x 100 = 124.84%