-69.91% is the change from 668 to 201
Calculation steps:
[( 201 - 668 ) ÷ 668] x 100 = -69.91%
Formula
Percentage change = [(201 - 668) / 668] x 100
Subtract the new number by the original number
201 - 668 = -467
-467 ÷ 668 = -0.6991017964071856
-0.6991017964071856 x 100 = -69.91%