-23.1% is the change from 844 to 649
Calculation steps:
[( 649 - 844 ) ÷ 844] x 100 = -23.1%
Formula
Percentage change = [(649 - 844) / 844] x 100
Subtract the new number by the original number
649 - 844 = -195
-195 ÷ 844 = -0.23104265402843602
-0.23104265402843602 x 100 = -23.1%