-66.46% is the change from 495 to 166
Calculation steps:
[( 166 - 495 ) ÷ 495] x 100 = -66.46%
Formula
Percentage change = [(166 - 495) / 495] x 100
Subtract the new number by the original number
166 - 495 = -329
-329 ÷ 495 = -0.6646464646464646
-0.6646464646464646 x 100 = -66.46%