-9.89% is the change from 819 to 738
Calculation steps:
[( 738 - 819 ) ÷ 819] x 100 = -9.89%
Formula
Percentage change = [(738 - 819) / 819] x 100
Subtract the new number by the original number
738 - 819 = -81
-81 ÷ 819 = -0.0989010989010989
-0.0989010989010989 x 100 = -9.89%