-17.39% is the change from 828 to 684
Calculation steps:
[( 684 - 828 ) ÷ 828] x 100 = -17.39%
Formula
Percentage change = [(684 - 828) / 828] x 100
Subtract the new number by the original number
684 - 828 = -144
-144 ÷ 828 = -0.17391304347826086
-0.17391304347826086 x 100 = -17.39%