-36.12% is the change from 515 to 329
Calculation steps:
[( 329 - 515 ) ÷ 515] x 100 = -36.12%
Formula
Percentage change = [(329 - 515) / 515] x 100
Subtract the new number by the original number
329 - 515 = -186
-186 ÷ 515 = -0.3611650485436893
-0.3611650485436893 x 100 = -36.12%