-65.87% is the change from 668 to 228
Calculation steps:
[( 228 - 668 ) ÷ 668] x 100 = -65.87%
Formula
Percentage change = [(228 - 668) / 668] x 100
Subtract the new number by the original number
228 - 668 = -440
-440 ÷ 668 = -0.6586826347305389
-0.6586826347305389 x 100 = -65.87%