-10.27% is the change from 711 to 638
Calculation steps:
[( 638 - 711 ) ÷ 711] x 100 = -10.27%
Formula
Percentage change = [(638 - 711) / 711] x 100
Subtract the new number by the original number
638 - 711 = -73
-73 ÷ 711 = -0.10267229254571027
-0.10267229254571027 x 100 = -10.27%