-20.18% is the change from 912 to 728
Calculation steps:
[( 728 - 912 ) ÷ 912] x 100 = -20.18%
Formula
Percentage change = [(728 - 912) / 912] x 100
Subtract the new number by the original number
728 - 912 = -184
-184 ÷ 912 = -0.20175438596491227
-0.20175438596491227 x 100 = -20.18%