-93.29% is the change from 671 to 45
Calculation steps:
[( 45 - 671 ) ÷ 671] x 100 = -93.29%
Formula
Percentage change = [(45 - 671) / 671] x 100
Subtract the new number by the original number
45 - 671 = -626
-626 ÷ 671 = -0.9329359165424739
-0.9329359165424739 x 100 = -93.29%