-12.93% is the change from 642 to 559
Calculation steps:
[( 559 - 642 ) ÷ 642] x 100 = -12.93%
Formula
Percentage change = [(559 - 642) / 642] x 100
Subtract the new number by the original number
559 - 642 = -83
-83 ÷ 642 = -0.1292834890965732
-0.1292834890965732 x 100 = -12.93%