-18.3% is the change from 814 to 665
Calculation steps:
[( 665 - 814 ) ÷ 814] x 100 = -18.3%
Formula
Percentage change = [(665 - 814) / 814] x 100
Subtract the new number by the original number
665 - 814 = -149
-149 ÷ 814 = -0.18304668304668303
-0.18304668304668303 x 100 = -18.3%