-76.01% is the change from 642 to 154
Calculation steps:
[( 154 - 642 ) ÷ 642] x 100 = -76.01%
Formula
Percentage change = [(154 - 642) / 642] x 100
Subtract the new number by the original number
154 - 642 = -488
-488 ÷ 642 = -0.7601246105919003
-0.7601246105919003 x 100 = -76.01%