-36.73% is the change from 814 to 515
Calculation steps:
[( 515 - 814 ) ÷ 814] x 100 = -36.73%
Formula
Percentage change = [(515 - 814) / 814] x 100
Subtract the new number by the original number
515 - 814 = -299
-299 ÷ 814 = -0.36732186732186733
-0.36732186732186733 x 100 = -36.73%