119.35% is the change from 310 to 680
Calculation steps:
[( 680 - 310 ) ÷ 310] x 100 = 119.35%
Formula
Percentage change = [(680 - 310) / 310] x 100
Subtract the new number by the original number
680 - 310 = 370
370 ÷ 310 = 1.1935483870967742
1.1935483870967742 x 100 = 119.35%