-39.41% is the change from 845 to 512
Calculation steps:
[( 512 - 845 ) ÷ 845] x 100 = -39.41%
Formula
Percentage change = [(512 - 845) / 845] x 100
Subtract the new number by the original number
512 - 845 = -333
-333 ÷ 845 = -0.3940828402366864
-0.3940828402366864 x 100 = -39.41%