122.8% is the change from 307 to 684
Calculation steps:
[( 684 - 307 ) ÷ 307] x 100 = 122.8%
Formula
Percentage change = [(684 - 307) / 307] x 100
Subtract the new number by the original number
684 - 307 = 377
377 ÷ 307 = 1.228013029315961
1.228013029315961 x 100 = 122.8%