-41.32% is the change from 864 to 507
Calculation steps:
[( 507 - 864 ) ÷ 864] x 100 = -41.32%
Formula
Percentage change = [(507 - 864) / 864] x 100
Subtract the new number by the original number
507 - 864 = -357
-357 ÷ 864 = -0.4131944444444444
-0.4131944444444444 x 100 = -41.32%