-3.53% is the change from 936 to 903
Calculation steps:
[( 903 - 936 ) ÷ 936] x 100 = -3.53%
Formula
Percentage change = [(903 - 936) / 936] x 100
Subtract the new number by the original number
903 - 936 = -33
-33 ÷ 936 = -0.035256410256410256
-0.035256410256410256 x 100 = -3.53%