-5.44% is the change from 680 to 643
Calculation steps:
[( 643 - 680 ) ÷ 680] x 100 = -5.44%
Formula
Percentage change = [(643 - 680) / 680] x 100
Subtract the new number by the original number
643 - 680 = -37
-37 ÷ 680 = -0.054411764705882354
-0.054411764705882354 x 100 = -5.44%