-66.54% is the change from 508 to 170
Calculation steps:
[( 170 - 508 ) ÷ 508] x 100 = -66.54%
Formula
Percentage change = [(170 - 508) / 508] x 100
Subtract the new number by the original number
170 - 508 = -338
-338 ÷ 508 = -0.6653543307086615
-0.6653543307086615 x 100 = -66.54%