34.26% is the change from 686 to 921
Calculation steps:
[( 921 - 686 ) ÷ 686] x 100 = 34.26%
Formula
Percentage change = [(921 - 686) / 686] x 100
Subtract the new number by the original number
921 - 686 = 235
235 ÷ 686 = 0.3425655976676385
0.3425655976676385 x 100 = 34.26%