-74.76% is the change from 828 to 209
Calculation steps:
[( 209 - 828 ) ÷ 828] x 100 = -74.76%
Formula
Percentage change = [(209 - 828) / 828] x 100
Subtract the new number by the original number
209 - 828 = -619
-619 ÷ 828 = -0.7475845410628019
-0.7475845410628019 x 100 = -74.76%