-94.39% is the change from 642 to 36
Calculation steps:
[( 36 - 642 ) ÷ 642] x 100 = -94.39%
Formula
Percentage change = [(36 - 642) / 642] x 100
Subtract the new number by the original number
36 - 642 = -606
-606 ÷ 642 = -0.9439252336448598
-0.9439252336448598 x 100 = -94.39%