-20.15% is the change from 680 to 543
Calculation steps:
[( 543 - 680 ) ÷ 680] x 100 = -20.15%
Formula
Percentage change = [(543 - 680) / 680] x 100
Subtract the new number by the original number
543 - 680 = -137
-137 ÷ 680 = -0.20147058823529412
-0.20147058823529412 x 100 = -20.15%