70.65% is the change from 402 to 686
Calculation steps:
[( 686 - 402 ) ÷ 402] x 100 = 70.65%
Formula
Percentage change = [(686 - 402) / 402] x 100
Subtract the new number by the original number
686 - 402 = 284
284 ÷ 402 = 0.7064676616915423
0.7064676616915423 x 100 = 70.65%