39.71% is the change from 680 to 950
Calculation steps:
[( 950 - 680 ) ÷ 680] x 100 = 39.71%
Formula
Percentage change = [(950 - 680) / 680] x 100
Subtract the new number by the original number
950 - 680 = 270
270 ÷ 680 = 0.39705882352941174
0.39705882352941174 x 100 = 39.71%