-40.97% is the change from 842 to 497
Calculation steps:
[( 497 - 842 ) ÷ 842] x 100 = -40.97%
Formula
Percentage change = [(497 - 842) / 842] x 100
Subtract the new number by the original number
497 - 842 = -345
-345 ÷ 842 = -0.40973871733966744
-0.40973871733966744 x 100 = -40.97%