-82.55% is the change from 642 to 112
Calculation steps:
[( 112 - 642 ) ÷ 642] x 100 = -82.55%
Formula
Percentage change = [(112 - 642) / 642] x 100
Subtract the new number by the original number
112 - 642 = -530
-530 ÷ 642 = -0.8255451713395638
-0.8255451713395638 x 100 = -82.55%