-78.79% is the change from 396 to 84
Calculation steps:
[( 84 - 396 ) ÷ 396] x 100 = -78.79%
Formula
Percentage change = [(84 - 396) / 396] x 100
Subtract the new number by the original number
84 - 396 = -312
-312 ÷ 396 = -0.7878787878787878
-0.7878787878787878 x 100 = -78.79%