124.1% is the change from 307 to 688
Calculation steps:
[( 688 - 307 ) ÷ 307] x 100 = 124.1%
Formula
Percentage change = [(688 - 307) / 307] x 100
Subtract the new number by the original number
688 - 307 = 381
381 ÷ 307 = 1.241042345276873
1.241042345276873 x 100 = 124.1%