-10.13% is the change from 711 to 639
Calculation steps:
[( 639 - 711 ) ÷ 711] x 100 = -10.13%
Formula
Percentage change = [(639 - 711) / 711] x 100
Subtract the new number by the original number
639 - 711 = -72
-72 ÷ 711 = -0.10126582278481013
-0.10126582278481013 x 100 = -10.13%