-20.44% is the change from 685 to 545
Calculation steps:
[( 545 - 685 ) ÷ 685] x 100 = -20.44%
Formula
Percentage change = [(545 - 685) / 685] x 100
Subtract the new number by the original number
545 - 685 = -140
-140 ÷ 685 = -0.20437956204379562
-0.20437956204379562 x 100 = -20.44%