-68.58% is the change from 643 to 202
Calculation steps:
[( 202 - 643 ) ÷ 643] x 100 = -68.58%
Formula
Percentage change = [(202 - 643) / 643] x 100
Subtract the new number by the original number
202 - 643 = -441
-441 ÷ 643 = -0.6858475894245724
-0.6858475894245724 x 100 = -68.58%