-36.56% is the change from 807 to 512
Calculation steps:
[( 512 - 807 ) ÷ 807] x 100 = -36.56%
Formula
Percentage change = [(512 - 807) / 807] x 100
Subtract the new number by the original number
512 - 807 = -295
-295 ÷ 807 = -0.3655514250309789
-0.3655514250309789 x 100 = -36.56%