-7.73% is the change from 699 to 645
Calculation steps:
[( 645 - 699 ) ÷ 699] x 100 = -7.73%
Formula
Percentage change = [(645 - 699) / 699] x 100
Subtract the new number by the original number
645 - 699 = -54
-54 ÷ 699 = -0.07725321888412018
-0.07725321888412018 x 100 = -7.73%