-8.09% is the change from 729 to 670
Calculation steps:
[( 670 - 729 ) ÷ 729] x 100 = -8.09%
Formula
Percentage change = [(670 - 729) / 729] x 100
Subtract the new number by the original number
670 - 729 = -59
-59 ÷ 729 = -0.08093278463648834
-0.08093278463648834 x 100 = -8.09%