-85.68% is the change from 447 to 64
Calculation steps:
[( 64 - 447 ) ÷ 447] x 100 = -85.68%
Formula
Percentage change = [(64 - 447) / 447] x 100
Subtract the new number by the original number
64 - 447 = -383
-383 ÷ 447 = -0.8568232662192393
-0.8568232662192393 x 100 = -85.68%