-45.55% is the change from 821 to 447
Calculation steps:
[( 447 - 821 ) ÷ 821] x 100 = -45.55%
Formula
Percentage change = [(447 - 821) / 821] x 100
Subtract the new number by the original number
447 - 821 = -374
-374 ÷ 821 = -0.45554202192448234
-0.45554202192448234 x 100 = -45.55%