-57.23% is the change from 505 to 216
Calculation steps:
[( 216 - 505 ) ÷ 505] x 100 = -57.23%
Formula
Percentage change = [(216 - 505) / 505] x 100
Subtract the new number by the original number
216 - 505 = -289
-289 ÷ 505 = -0.5722772277227722
-0.5722772277227722 x 100 = -57.23%