-19.38% is the change from 805 to 649
Calculation steps:
[( 649 - 805 ) ÷ 805] x 100 = -19.38%
Formula
Percentage change = [(649 - 805) / 805] x 100
Subtract the new number by the original number
649 - 805 = -156
-156 ÷ 805 = -0.1937888198757764
-0.1937888198757764 x 100 = -19.38%