-17.52% is the change from 491 to 405
Calculation steps:
[( 405 - 491 ) ÷ 491] x 100 = -17.52%
Formula
Percentage change = [(405 - 491) / 491] x 100
Subtract the new number by the original number
405 - 491 = -86
-86 ÷ 491 = -0.17515274949083504
-0.17515274949083504 x 100 = -17.52%