-18.22% is the change from 818 to 669
Calculation steps:
[( 669 - 818 ) ÷ 818] x 100 = -18.22%
Formula
Percentage change = [(669 - 818) / 818] x 100
Subtract the new number by the original number
669 - 818 = -149
-149 ÷ 818 = -0.1821515892420538
-0.1821515892420538 x 100 = -18.22%