-18.24% is the change from 828 to 677
Calculation steps:
[( 677 - 828 ) ÷ 828] x 100 = -18.24%
Formula
Percentage change = [(677 - 828) / 828] x 100
Subtract the new number by the original number
677 - 828 = -151
-151 ÷ 828 = -0.1823671497584541
-0.1823671497584541 x 100 = -18.24%