-6.46% is the change from 712 to 666
Calculation steps:
[( 666 - 712 ) ÷ 712] x 100 = -6.46%
Formula
Percentage change = [(666 - 712) / 712] x 100
Subtract the new number by the original number
666 - 712 = -46
-46 ÷ 712 = -0.06460674157303371
-0.06460674157303371 x 100 = -6.46%