-79.39% is the change from 495 to 102
Calculation steps:
[( 102 - 495 ) ÷ 495] x 100 = -79.39%
Formula
Percentage change = [(102 - 495) / 495] x 100
Subtract the new number by the original number
102 - 495 = -393
-393 ÷ 495 = -0.793939393939394
-0.793939393939394 x 100 = -79.39%