-17.7% is the change from 808 to 665
Calculation steps:
[( 665 - 808 ) ÷ 808] x 100 = -17.7%
Formula
Percentage change = [(665 - 808) / 808] x 100
Subtract the new number by the original number
665 - 808 = -143
-143 ÷ 808 = -0.17698019801980197
-0.17698019801980197 x 100 = -17.7%