-7.87% is the change from 699 to 644
Calculation steps:
[( 644 - 699 ) ÷ 699] x 100 = -7.87%
Formula
Percentage change = [(644 - 699) / 699] x 100
Subtract the new number by the original number
644 - 699 = -55
-55 ÷ 699 = -0.07868383404864092
-0.07868383404864092 x 100 = -7.87%