-7.55% is the change from 993 to 918
Calculation steps:
[( 918 - 993 ) ÷ 993] x 100 = -7.55%
Formula
Percentage change = [(918 - 993) / 993] x 100
Subtract the new number by the original number
918 - 993 = -75
-75 ÷ 993 = -0.0755287009063444
-0.0755287009063444 x 100 = -7.55%