-88.49% is the change from 643 to 74
Calculation steps:
[( 74 - 643 ) ÷ 643] x 100 = -88.49%
Formula
Percentage change = [(74 - 643) / 643] x 100
Subtract the new number by the original number
74 - 643 = -569
-569 ÷ 643 = -0.8849144634525661
-0.8849144634525661 x 100 = -88.49%