-44.85% is the change from 515 to 284
Calculation steps:
[( 284 - 515 ) ÷ 515] x 100 = -44.85%
Formula
Percentage change = [(284 - 515) / 515] x 100
Subtract the new number by the original number
284 - 515 = -231
-231 ÷ 515 = -0.44854368932038835
-0.44854368932038835 x 100 = -44.85%