-62.77% is the change from 642 to 239
Calculation steps:
[( 239 - 642 ) ÷ 642] x 100 = -62.77%
Formula
Percentage change = [(239 - 642) / 642] x 100
Subtract the new number by the original number
239 - 642 = -403
-403 ÷ 642 = -0.6277258566978193
-0.6277258566978193 x 100 = -62.77%