-83.84% is the change from 396 to 64
Calculation steps:
[( 64 - 396 ) ÷ 396] x 100 = -83.84%
Formula
Percentage change = [(64 - 396) / 396] x 100
Subtract the new number by the original number
64 - 396 = -332
-332 ÷ 396 = -0.8383838383838383
-0.8383838383838383 x 100 = -83.84%