-17.16% is the change from 921 to 763
Calculation steps:
[( 763 - 921 ) ÷ 921] x 100 = -17.16%
Formula
Percentage change = [(763 - 921) / 921] x 100
Subtract the new number by the original number
763 - 921 = -158
-158 ÷ 921 = -0.17155266015200868
-0.17155266015200868 x 100 = -17.16%