-21.15% is the change from 993 to 783
Calculation steps:
[( 783 - 993 ) ÷ 993] x 100 = -21.15%
Formula
Percentage change = [(783 - 993) / 993] x 100
Subtract the new number by the original number
783 - 993 = -210
-210 ÷ 993 = -0.21148036253776434
-0.21148036253776434 x 100 = -21.15%