-18.68% is the change from 921 to 749
Calculation steps:
[( 749 - 921 ) ÷ 921] x 100 = -18.68%
Formula
Percentage change = [(749 - 921) / 921] x 100
Subtract the new number by the original number
749 - 921 = -172
-172 ÷ 921 = -0.18675352877307275
-0.18675352877307275 x 100 = -18.68%