-91.52% is the change from 495 to 42
Calculation steps:
[( 42 - 495 ) ÷ 495] x 100 = -91.52%
Formula
Percentage change = [(42 - 495) / 495] x 100
Subtract the new number by the original number
42 - 495 = -453
-453 ÷ 495 = -0.9151515151515152
-0.9151515151515152 x 100 = -91.52%