-38.92% is the change from 817 to 499
Calculation steps:
[( 499 - 817 ) ÷ 817] x 100 = -38.92%
Formula
Percentage change = [(499 - 817) / 817] x 100
Subtract the new number by the original number
499 - 817 = -318
-318 ÷ 817 = -0.38922888616891066
-0.38922888616891066 x 100 = -38.92%