42.57% is the change from 686 to 978
Calculation steps:
[( 978 - 686 ) ÷ 686] x 100 = 42.57%
Formula
Percentage change = [(978 - 686) / 686] x 100
Subtract the new number by the original number
978 - 686 = 292
292 ÷ 686 = 0.42565597667638483
0.42565597667638483 x 100 = 42.57%