-18.56% is the change from 819 to 667
Calculation steps:
[( 667 - 819 ) ÷ 819] x 100 = -18.56%
Formula
Percentage change = [(667 - 819) / 819] x 100
Subtract the new number by the original number
667 - 819 = -152
-152 ÷ 819 = -0.1855921855921856
-0.1855921855921856 x 100 = -18.56%