-2.25% is the change from 933 to 912
Calculation steps:
[( 912 - 933 ) ÷ 933] x 100 = -2.25%
Formula
Percentage change = [(912 - 933) / 933] x 100
Subtract the new number by the original number
912 - 933 = -21
-21 ÷ 933 = -0.022508038585209004
-0.022508038585209004 x 100 = -2.25%