-23.31% is the change from 828 to 635
Calculation steps:
[( 635 - 828 ) ÷ 828] x 100 = -23.31%
Formula
Percentage change = [(635 - 828) / 828] x 100
Subtract the new number by the original number
635 - 828 = -193
-193 ÷ 828 = -0.23309178743961353
-0.23309178743961353 x 100 = -23.31%