-36.1% is the change from 806 to 515
Calculation steps:
[( 515 - 806 ) ÷ 806] x 100 = -36.1%
Formula
Percentage change = [(515 - 806) / 806] x 100
Subtract the new number by the original number
515 - 806 = -291
-291 ÷ 806 = -0.3610421836228288
-0.3610421836228288 x 100 = -36.1%