70.5% is the change from 400 to 682
Calculation steps:
[( 682 - 400 ) ÷ 400] x 100 = 70.5%
Formula
Percentage change = [(682 - 400) / 400] x 100
Subtract the new number by the original number
682 - 400 = 282
282 ÷ 400 = 0.705
0.705 x 100 = 70.5%
Example