-20.07% is the change from 912 to 729
Calculation steps:
[( 729 - 912 ) ÷ 912] x 100 = -20.07%
Formula
Percentage change = [(729 - 912) / 912] x 100
Subtract the new number by the original number
729 - 912 = -183
-183 ÷ 912 = -0.20065789473684212
-0.20065789473684212 x 100 = -20.07%