-25.71% is the change from 665 to 494
Calculation steps:
[( 494 - 665 ) ÷ 665] x 100 = -25.71%
Formula
Percentage change = [(494 - 665) / 665] x 100
Subtract the new number by the original number
494 - 665 = -171
-171 ÷ 665 = -0.2571428571428571
-0.2571428571428571 x 100 = -25.71%