-20.03% is the change from 679 to 543
Calculation steps:
[( 543 - 679 ) ÷ 679] x 100 = -20.03%
Formula
Percentage change = [(543 - 679) / 679] x 100
Subtract the new number by the original number
543 - 679 = -136
-136 ÷ 679 = -0.20029455081001474
-0.20029455081001474 x 100 = -20.03%