-14.46% is the change from 491 to 420
Calculation steps:
[( 420 - 491 ) ÷ 491] x 100 = -14.46%
Formula
Percentage change = [(420 - 491) / 491] x 100
Subtract the new number by the original number
420 - 491 = -71
-71 ÷ 491 = -0.1446028513238289
-0.1446028513238289 x 100 = -14.46%