-40% is the change from 495 to 297
Calculation steps:
[( 297 - 495 ) ÷ 495] x 100 = -40%
Formula
Percentage change = [(297 - 495) / 495] x 100
Subtract the new number by the original number
297 - 495 = -198
-198 ÷ 495 = -0.4
-0.4 x 100 = -40%
Example