-51.79% is the change from 446 to 215
Calculation steps:
[( 215 - 446 ) ÷ 446] x 100 = -51.79%
Formula
Percentage change = [(215 - 446) / 446] x 100
Subtract the new number by the original number
215 - 446 = -231
-231 ÷ 446 = -0.5179372197309418
-0.5179372197309418 x 100 = -51.79%