-7.75% is the change from 697 to 643
Calculation steps:
[( 643 - 697 ) ÷ 697] x 100 = -7.75%
Formula
Percentage change = [(643 - 697) / 697] x 100
Subtract the new number by the original number
643 - 697 = -54
-54 ÷ 697 = -0.07747489239598278
-0.07747489239598278 x 100 = -7.75%