-35.03% is the change from 491 to 319
Calculation steps:
[( 319 - 491 ) ÷ 491] x 100 = -35.03%
Formula
Percentage change = [(319 - 491) / 491] x 100
Subtract the new number by the original number
319 - 491 = -172
-172 ÷ 491 = -0.35030549898167007
-0.35030549898167007 x 100 = -35.03%