-12.49% is the change from 921 to 806
Calculation steps:
[( 806 - 921 ) ÷ 921] x 100 = -12.49%
Formula
Percentage change = [(806 - 921) / 921] x 100
Subtract the new number by the original number
806 - 921 = -115
-115 ÷ 921 = -0.1248642779587405
-0.1248642779587405 x 100 = -12.49%