-51.12% is the change from 446 to 218
Calculation steps:
[( 218 - 446 ) ÷ 446] x 100 = -51.12%
Formula
Percentage change = [(218 - 446) / 446] x 100
Subtract the new number by the original number
218 - 446 = -228
-228 ÷ 446 = -0.5112107623318386
-0.5112107623318386 x 100 = -51.12%