-19.58% is the change from 807 to 649
Calculation steps:
[( 649 - 807 ) ÷ 807] x 100 = -19.58%
Formula
Percentage change = [(649 - 807) / 807] x 100
Subtract the new number by the original number
649 - 807 = -158
-158 ÷ 807 = -0.19578686493184635
-0.19578686493184635 x 100 = -19.58%