-12.38% is the change from 921 to 807
Calculation steps:
[( 807 - 921 ) ÷ 921] x 100 = -12.38%
Formula
Percentage change = [(807 - 921) / 921] x 100
Subtract the new number by the original number
807 - 921 = -114
-114 ÷ 921 = -0.1237785016286645
-0.1237785016286645 x 100 = -12.38%