-15.75% is the change from 819 to 690
Calculation steps:
[( 690 - 819 ) ÷ 819] x 100 = -15.75%
Formula
Percentage change = [(690 - 819) / 819] x 100
Subtract the new number by the original number
690 - 819 = -129
-129 ÷ 819 = -0.1575091575091575
-0.1575091575091575 x 100 = -15.75%