-14.95% is the change from 642 to 546
Calculation steps:
[( 546 - 642 ) ÷ 642] x 100 = -14.95%
Formula
Percentage change = [(546 - 642) / 642] x 100
Subtract the new number by the original number
546 - 642 = -96
-96 ÷ 642 = -0.14953271028037382
-0.14953271028037382 x 100 = -14.95%