-12.77% is the change from 642 to 560
Calculation steps:
[( 560 - 642 ) ÷ 642] x 100 = -12.77%
Formula
Percentage change = [(560 - 642) / 642] x 100
Subtract the new number by the original number
560 - 642 = -82
-82 ÷ 642 = -0.1277258566978193
-0.1277258566978193 x 100 = -12.77%