-94.4% is the change from 643 to 36
Calculation steps:
[( 36 - 643 ) ÷ 643] x 100 = -94.4%
Formula
Percentage change = [(36 - 643) / 643] x 100
Subtract the new number by the original number
36 - 643 = -607
-607 ÷ 643 = -0.9440124416796267
-0.9440124416796267 x 100 = -94.4%