-8.44% is the change from 699 to 640
Calculation steps:
[( 640 - 699 ) ÷ 699] x 100 = -8.44%
Formula
Percentage change = [(640 - 699) / 699] x 100
Subtract the new number by the original number
640 - 699 = -59
-59 ÷ 699 = -0.0844062947067239
-0.0844062947067239 x 100 = -8.44%