-93.48% is the change from 660 to 43
Calculation steps:
[( 43 - 660 ) ÷ 660] x 100 = -93.48%
Formula
Percentage change = [(43 - 660) / 660] x 100
Subtract the new number by the original number
43 - 660 = -617
-617 ÷ 660 = -0.9348484848484848
-0.9348484848484848 x 100 = -93.48%