-36.48% is the change from 806 to 512
Calculation steps:
[( 512 - 806 ) ÷ 806] x 100 = -36.48%
Formula
Percentage change = [(512 - 806) / 806] x 100
Subtract the new number by the original number
512 - 806 = -294
-294 ÷ 806 = -0.36476426799007444
-0.36476426799007444 x 100 = -36.48%