-10.66% is the change from 647 to 578
Calculation steps:
[( 578 - 647 ) ÷ 647] x 100 = -10.66%
Formula
Percentage change = [(578 - 647) / 647] x 100
Subtract the new number by the original number
578 - 647 = -69
-69 ÷ 647 = -0.10664605873261206
-0.10664605873261206 x 100 = -10.66%