-85.54% is the change from 491 to 71
Calculation steps:
[( 71 - 491 ) ÷ 491] x 100 = -85.54%
Formula
Percentage change = [(71 - 491) / 491] x 100
Subtract the new number by the original number
71 - 491 = -420
-420 ÷ 491 = -0.8553971486761711
-0.8553971486761711 x 100 = -85.54%