-93.26% is the change from 638 to 43
Calculation steps:
[( 43 - 638 ) ÷ 638] x 100 = -93.26%
Formula
Percentage change = [(43 - 638) / 638] x 100
Subtract the new number by the original number
43 - 638 = -595
-595 ÷ 638 = -0.932601880877743
-0.932601880877743 x 100 = -93.26%