-36.88% is the change from 808 to 510
Calculation steps:
[( 510 - 808 ) ÷ 808] x 100 = -36.88%
Formula
Percentage change = [(510 - 808) / 808] x 100
Subtract the new number by the original number
510 - 808 = -298
-298 ÷ 808 = -0.3688118811881188
-0.3688118811881188 x 100 = -36.88%