-40.05% is the change from 864 to 518
Calculation steps:
[( 518 - 864 ) ÷ 864] x 100 = -40.05%
Formula
Percentage change = [(518 - 864) / 864] x 100
Subtract the new number by the original number
518 - 864 = -346
-346 ÷ 864 = -0.40046296296296297
-0.40046296296296297 x 100 = -40.05%