-2.48% is the change from 403 to 393
Calculation steps:
[( 393 - 403 ) ÷ 403] x 100 = -2.48%
Formula
Percentage change = [(393 - 403) / 403] x 100
Subtract the new number by the original number
393 - 403 = -10
-10 ÷ 403 = -0.02481389578163772
-0.02481389578163772 x 100 = -2.48%