-14.98% is the change from 921 to 783
Calculation steps:
[( 783 - 921 ) ÷ 921] x 100 = -14.98%
Formula
Percentage change = [(783 - 921) / 921] x 100
Subtract the new number by the original number
783 - 921 = -138
-138 ÷ 921 = -0.1498371335504886
-0.1498371335504886 x 100 = -14.98%