39.8% is the change from 686 to 959
Calculation steps:
[( 959 - 686 ) ÷ 686] x 100 = 39.8%
Formula
Percentage change = [(959 - 686) / 686] x 100
Subtract the new number by the original number
959 - 686 = 273
273 ÷ 686 = 0.3979591836734694
0.3979591836734694 x 100 = 39.8%