-3.49% is the change from 945 to 912
Calculation steps:
[( 912 - 945 ) ÷ 945] x 100 = -3.49%
Formula
Percentage change = [(912 - 945) / 945] x 100
Subtract the new number by the original number
912 - 945 = -33
-33 ÷ 945 = -0.03492063492063492
-0.03492063492063492 x 100 = -3.49%