-88.59% is the change from 491 to 56
Calculation steps:
[( 56 - 491 ) ÷ 491] x 100 = -88.59%
Formula
Percentage change = [(56 - 491) / 491] x 100
Subtract the new number by the original number
56 - 491 = -435
-435 ÷ 491 = -0.8859470468431772
-0.8859470468431772 x 100 = -88.59%