-9.27% is the change from 712 to 646
Calculation steps:
[( 646 - 712 ) ÷ 712] x 100 = -9.27%
Formula
Percentage change = [(646 - 712) / 712] x 100
Subtract the new number by the original number
646 - 712 = -66
-66 ÷ 712 = -0.09269662921348315
-0.09269662921348315 x 100 = -9.27%