-11.75% is the change from 647 to 571
Calculation steps:
[( 571 - 647 ) ÷ 647] x 100 = -11.75%
Formula
Percentage change = [(571 - 647) / 647] x 100
Subtract the new number by the original number
571 - 647 = -76
-76 ÷ 647 = -0.11746522411128284
-0.11746522411128284 x 100 = -11.75%