-28.68% is the change from 680 to 485
Calculation steps:
[( 485 - 680 ) ÷ 680] x 100 = -28.68%
Formula
Percentage change = [(485 - 680) / 680] x 100
Subtract the new number by the original number
485 - 680 = -195
-195 ÷ 680 = -0.2867647058823529
-0.2867647058823529 x 100 = -28.68%