-74.4% is the change from 828 to 212
Calculation steps:
[( 212 - 828 ) ÷ 828] x 100 = -74.4%
Formula
Percentage change = [(212 - 828) / 828] x 100
Subtract the new number by the original number
212 - 828 = -616
-616 ÷ 828 = -0.7439613526570048
-0.7439613526570048 x 100 = -74.4%