-51.66% is the change from 451 to 218
Calculation steps:
[( 218 - 451 ) ÷ 451] x 100 = -51.66%
Formula
Percentage change = [(218 - 451) / 451] x 100
Subtract the new number by the original number
218 - 451 = -233
-233 ÷ 451 = -0.516629711751663
-0.516629711751663 x 100 = -51.66%