-46.85% is the change from 666 to 354
Calculation steps:
[( 354 - 666 ) ÷ 666] x 100 = -46.85%
Formula
Percentage change = [(354 - 666) / 666] x 100
Subtract the new number by the original number
354 - 666 = -312
-312 ÷ 666 = -0.46846846846846846
-0.46846846846846846 x 100 = -46.85%