-20.89% is the change from 828 to 655
Calculation steps:
[( 655 - 828 ) ÷ 828] x 100 = -20.89%
Formula
Percentage change = [(655 - 828) / 828] x 100
Subtract the new number by the original number
655 - 828 = -173
-173 ÷ 828 = -0.20893719806763286
-0.20893719806763286 x 100 = -20.89%