-61.63% is the change from 649 to 249
Calculation steps:
[( 249 - 649 ) ÷ 649] x 100 = -61.63%
Formula
Percentage change = [(249 - 649) / 649] x 100
Subtract the new number by the original number
249 - 649 = -400
-400 ÷ 649 = -0.6163328197226502
-0.6163328197226502 x 100 = -61.63%