-81.65% is the change from 643 to 118
Calculation steps:
[( 118 - 643 ) ÷ 643] x 100 = -81.65%
Formula
Percentage change = [(118 - 643) / 643] x 100
Subtract the new number by the original number
118 - 643 = -525
-525 ÷ 643 = -0.8164852255054432
-0.8164852255054432 x 100 = -81.65%