-3.12% is the change from 963 to 933
Calculation steps:
[( 933 - 963 ) ÷ 963] x 100 = -3.12%
Formula
Percentage change = [(933 - 963) / 963] x 100
Subtract the new number by the original number
933 - 963 = -30
-30 ÷ 963 = -0.03115264797507788
-0.03115264797507788 x 100 = -3.12%