-9.69% is the change from 712 to 643
Calculation steps:
[( 643 - 712 ) ÷ 712] x 100 = -9.69%
Formula
Percentage change = [(643 - 712) / 712] x 100
Subtract the new number by the original number
643 - 712 = -69
-69 ÷ 712 = -0.09691011235955056
-0.09691011235955056 x 100 = -9.69%