-19.76% is the change from 921 to 739
Calculation steps:
[( 739 - 921 ) ÷ 921] x 100 = -19.76%
Formula
Percentage change = [(739 - 921) / 921] x 100
Subtract the new number by the original number
739 - 921 = -182
-182 ÷ 921 = -0.1976112920738328
-0.1976112920738328 x 100 = -19.76%