-16.5% is the change from 491 to 410
Calculation steps:
[( 410 - 491 ) ÷ 491] x 100 = -16.5%
Formula
Percentage change = [(410 - 491) / 491] x 100
Subtract the new number by the original number
410 - 491 = -81
-81 ÷ 491 = -0.164969450101833
-0.164969450101833 x 100 = -16.5%