-66.47% is the change from 668 to 224
Calculation steps:
[( 224 - 668 ) ÷ 668] x 100 = -66.47%
Formula
Percentage change = [(224 - 668) / 668] x 100
Subtract the new number by the original number
224 - 668 = -444
-444 ÷ 668 = -0.6646706586826348
-0.6646706586826348 x 100 = -66.47%