-15.63% is the change from 819 to 691
Calculation steps:
[( 691 - 819 ) ÷ 819] x 100 = -15.63%
Formula
Percentage change = [(691 - 819) / 819] x 100
Subtract the new number by the original number
691 - 819 = -128
-128 ÷ 819 = -0.1562881562881563
-0.1562881562881563 x 100 = -15.63%