-17.81% is the change from 814 to 669
Calculation steps:
[( 669 - 814 ) ÷ 814] x 100 = -17.81%
Formula
Percentage change = [(669 - 814) / 814] x 100
Subtract the new number by the original number
669 - 814 = -145
-145 ÷ 814 = -0.17813267813267813
-0.17813267813267813 x 100 = -17.81%