-27.52% is the change from 912 to 661
Calculation steps:
[( 661 - 912 ) ÷ 912] x 100 = -27.52%
Formula
Percentage change = [(661 - 912) / 912] x 100
Subtract the new number by the original number
661 - 912 = -251
-251 ÷ 912 = -0.27521929824561403
-0.27521929824561403 x 100 = -27.52%