-46.7% is the change from 666 to 355
Calculation steps:
[( 355 - 666 ) ÷ 666] x 100 = -46.7%
Formula
Percentage change = [(355 - 666) / 666] x 100
Subtract the new number by the original number
355 - 666 = -311
-311 ÷ 666 = -0.466966966966967
-0.466966966966967 x 100 = -46.7%