-68.89% is the change from 646 to 201
Calculation steps:
[( 201 - 646 ) ÷ 646] x 100 = -68.89%
Formula
Percentage change = [(201 - 646) / 646] x 100
Subtract the new number by the original number
201 - 646 = -445
-445 ÷ 646 = -0.6888544891640866
-0.6888544891640866 x 100 = -68.89%