-19.71% is the change from 680 to 546
Calculation steps:
[( 546 - 680 ) ÷ 680] x 100 = -19.71%
Formula
Percentage change = [(546 - 680) / 680] x 100
Subtract the new number by the original number
546 - 680 = -134
-134 ÷ 680 = -0.19705882352941176
-0.19705882352941176 x 100 = -19.71%