-9.37% is the change from 993 to 900
Calculation steps:
[( 900 - 993 ) ÷ 993] x 100 = -9.37%
Formula
Percentage change = [(900 - 993) / 993] x 100
Subtract the new number by the original number
900 - 993 = -93
-93 ÷ 993 = -0.09365558912386707
-0.09365558912386707 x 100 = -9.37%