-93.34% is the change from 646 to 43
Calculation steps:
[( 43 - 646 ) ÷ 646] x 100 = -93.34%
Formula
Percentage change = [(43 - 646) / 646] x 100
Subtract the new number by the original number
43 - 646 = -603
-603 ÷ 646 = -0.93343653250774
-0.93343653250774 x 100 = -93.34%