-51.23% is the change from 447 to 218
Calculation steps:
[( 218 - 447 ) ÷ 447] x 100 = -51.23%
Formula
Percentage change = [(218 - 447) / 447] x 100
Subtract the new number by the original number
218 - 447 = -229
-229 ÷ 447 = -0.5123042505592841
-0.5123042505592841 x 100 = -51.23%