-15.61% is the change from 993 to 838
Calculation steps:
[( 838 - 993 ) ÷ 993] x 100 = -15.61%
Formula
Percentage change = [(838 - 993) / 993] x 100
Subtract the new number by the original number
838 - 993 = -155
-155 ÷ 993 = -0.15609264853977844
-0.15609264853977844 x 100 = -15.61%