-78.81% is the change from 571 to 121
Calculation steps:
[( 121 - 571 ) ÷ 571] x 100 = -78.81%
Formula
Percentage change = [(121 - 571) / 571] x 100
Subtract the new number by the original number
121 - 571 = -450
-450 ÷ 571 = -0.7880910683012259
-0.7880910683012259 x 100 = -78.81%