-67.8% is the change from 649 to 209
Calculation steps:
[( 209 - 649 ) ÷ 649] x 100 = -67.8%
Formula
Percentage change = [(209 - 649) / 649] x 100
Subtract the new number by the original number
209 - 649 = -440
-440 ÷ 649 = -0.6779661016949152
-0.6779661016949152 x 100 = -67.8%