-24.76% is the change from 828 to 623
Calculation steps:
[( 623 - 828 ) ÷ 828] x 100 = -24.76%
Formula
Percentage change = [(623 - 828) / 828] x 100
Subtract the new number by the original number
623 - 828 = -205
-205 ÷ 828 = -0.24758454106280192
-0.24758454106280192 x 100 = -24.76%