-82.4% is the change from 642 to 113
Calculation steps:
[( 113 - 642 ) ÷ 642] x 100 = -82.4%
Formula
Percentage change = [(113 - 642) / 642] x 100
Subtract the new number by the original number
113 - 642 = -529
-529 ÷ 642 = -0.82398753894081
-0.82398753894081 x 100 = -82.4%