-11.84% is the change from 642 to 566
Calculation steps:
[( 566 - 642 ) ÷ 642] x 100 = -11.84%
Formula
Percentage change = [(566 - 642) / 642] x 100
Subtract the new number by the original number
566 - 642 = -76
-76 ÷ 642 = -0.11838006230529595
-0.11838006230529595 x 100 = -11.84%