-57.67% is the change from 515 to 218
Calculation steps:
[( 218 - 515 ) ÷ 515] x 100 = -57.67%
Formula
Percentage change = [(218 - 515) / 515] x 100
Subtract the new number by the original number
218 - 515 = -297
-297 ÷ 515 = -0.5766990291262136
-0.5766990291262136 x 100 = -57.67%