-17.91% is the change from 508 to 417
Calculation steps:
[( 417 - 508 ) ÷ 508] x 100 = -17.91%
Formula
Percentage change = [(417 - 508) / 508] x 100
Subtract the new number by the original number
417 - 508 = -91
-91 ÷ 508 = -0.17913385826771652
-0.17913385826771652 x 100 = -17.91%