-6.3% is the change from 682 to 639
Calculation steps:
[( 639 - 682 ) ÷ 682] x 100 = -6.3%
Formula
Percentage change = [(639 - 682) / 682] x 100
Subtract the new number by the original number
639 - 682 = -43
-43 ÷ 682 = -0.06304985337243402
-0.06304985337243402 x 100 = -6.3%