-14.01% is the change from 571 to 491
Calculation steps:
[( 491 - 571 ) ÷ 571] x 100 = -14.01%
Formula
Percentage change = [(491 - 571) / 571] x 100
Subtract the new number by the original number
491 - 571 = -80
-80 ÷ 571 = -0.14010507880910683
-0.14010507880910683 x 100 = -14.01%