-33.46% is the change from 508 to 338
Calculation steps:
[( 338 - 508 ) ÷ 508] x 100 = -33.46%
Formula
Percentage change = [(338 - 508) / 508] x 100
Subtract the new number by the original number
338 - 508 = -170
-170 ÷ 508 = -0.3346456692913386
-0.3346456692913386 x 100 = -33.46%